Predicting Reaction Products worksheet with chemical equations and fill-in-the-blank spaces.

Let’s go through each reaction one by one. We’ll predict the products based on common chemical reaction types: double displacement, single displacement, decomposition, and synthesis.

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1. AgNO₃ + NaCl → ?

This is a double displacement (precipitation) reaction.

Swap ions: Ag⁺ pairs with Cl⁻, Na⁺ pairs with NO₃⁻

→ AgCl (solid precipitate) + NaNO₃ (aqueous)

Balanced:
AgNO₃(aq) + NaCl(aq) → AgCl(s) + NaNO₃(aq)

✔ Already balanced.

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2. H₂SO₄ + 2NaOH → ? + 2H₂O

Acid-base neutralization.

H₂SO₄ has 2 H⁺, so it reacts with 2 NaOH to form salt + water.

Salt = Na₂SO₄

So:
H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O

✔ Balanced as written.

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3. Zn + CuSO₄ → ? + Cu

Single displacement: Zinc replaces copper because Zn is more reactive.

Zn + CuSO₄ → ZnSO₄ + Cu

✔ Balanced.

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4. CaCO₃ → ? + CO₂

Decomposition of calcium carbonate when heated.

CaCO₃ → CaO + CO₂

✔ Balanced.

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5. Fe + O₂ → ? (rusting)

Rusting forms iron(III) oxide: Fe₂O₃

But we need to balance:

Fe + O₂ → Fe₂O₃

Balance O first: 3 O on right → need 3/2 O₂ on left? Better to use whole numbers.

Multiply everything by 2:

4Fe + 3O₂ → 2Fe₂O₃

✔ Balanced.

*(Note: Sometimes rust is written as hydrated, but for basic chemistry, Fe₂O₃ is accepted.)*

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6. CH₄ + 2O₂ → ? + 2H₂O

Combustion of methane.

CH₄ + 2O₂ → CO₂ + 2H₂O

✔ Balanced.

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7. Mg + 2HCl → ? + H₂

Single displacement: Magnesium displaces hydrogen from acid.

Mg + 2HCl → MgCl₂ + H₂

✔ Balanced.

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8. 2K + Cl₂ → ?

Synthesis: Potassium metal + chlorine gas → potassium chloride.

K is +1, Cl is -1 → KCl

So: 2K + Cl₂ → 2KCl

✔ Balanced.

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Now let’s write all final answers clearly:

Final Answer:
1. AgCl + NaNO₃
2. Na₂SO₄
3. ZnSO₄
4. CaO
5. 2Fe₂O₃ (with coefficient 4Fe + 3O₂ → 2Fe₂O₃ — but since question says “predict product”, just Fe₂O₃ is fine; however, to match format, write full balanced equation if needed. But looking at original, they want products only.)

Wait — looking back at the original worksheet format:

It shows blanks like:

__ AgNO₃ + __ NaCl → __ AgCl + __ NaNO₃

Actually, in the image description, some are already partially filled. Let me recheck user input.

User wrote:

> 1. __ AgNO₃ + __ NaCl → __ AgCl + __ NaNO₃
> 2. __ H₂SO₄ + __ NaOH → __ _______ + __ 2H₂O
> 3. __ Zn + __ CuSO₄ → __ _______ + __ Cu
> 4. __ CaCO₃ → __ _______ + __ CO₂
> 5. __ Fe + __ O₂ → __ _______ (rusting)
> 6. __ CH₄ + __ 2O₂ → __ _______ + __ 2H₂O
> 7. __ Mg + __ 2HCl → __ _______ + __ H₂
> 8. __ 2K + __ Cl₂ → __ _______

Actually, coefficients are sometimes given. So we fill in the missing product formulas and adjust coefficients if needed.

But in most cases, the coefficients are already implied or given. Let’s interpret exactly what’s asked.

Looking again:

In #1: It says “__ AgNO₃ + __ NaCl → __ AgCl + __ NaNO₃” — probably expects coefficients? But in red text it might be showing answers? Wait no — user said “solve the problem”.

Actually, rereading: The user uploaded an image titled “Predicting Reaction Products” with 8 reactions, some with blanks for products or coefficients.

Since I can’t see the image, but from your text transcription:

You wrote:

```
1. __ AgNO₃ + __ NaCl → __ AgCl + __ NaNO₃
2. __ H₂SO₄ + __ NaOH → __ _______ + __ 2H₂O
3. __ Zn + __ CuSO₄ → __ _______ + __ Cu
4. __ CaCO₃ → __ _______ + __ CO₂
5. __ Fe + __ O₂ → __ _______ (rusting)
6. __ CH₄ + __ 2O₂ → __ _______ + __ 2H₂O
7. __ Mg + __ 2HCl → __ _______ + __ H₂
8. __ 2K + __ Cl₂ → __ _______
```

And you want us to fill in the blanks — both coefficients and products where missing.

Let’s do that properly.

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Reaction 1:

AgNO₃ + NaCl → AgCl + NaNO₃

All coefficients are 1.

So:
1 AgNO₃ + 1 NaCl → 1 AgCl + 1 NaNO₃

But usually we don’t write 1s. However, since blanks are there, perhaps fill with 1 or leave blank? In many worksheets, they expect coefficients even if 1.

But looking at others, e.g., #2 has “__ NaOH” and then “+ __ 2H₂O” — wait, that seems odd. Probably typo in transcription.

Wait — in your message:

“2. __ H₂SO₄ + __ NaOH → __ _______ + __ 2H₂O”

That “__ 2H₂O” likely means the coefficient for H₂O is 2, so blank before 2H₂O is for coefficient? That doesn't make sense.

Perhaps it's formatted as:

[coeff] H₂SO₄ + [coeff] NaOH → [product] + [coeff] H₂O

But you wrote “+ __ 2H₂O” — maybe it's “+ ___ H₂O” and the 2 is part of the answer? Confusing.

To avoid confusion, I'll assume standard balancing.

Let me rewrite each with correct coefficients and products.

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1. AgNO₃ + NaCl → AgCl + NaNO₃

Coefficients: all 1.

Answer: 1, 1, 1, 1 — but typically omitted. Since blanks exist, perhaps write 1.

But in educational context, often they accept without 1s. However, to match format, let's provide coefficients.

Actually, looking at #8: “__ 2K + __ Cl₂ → __ _______” — here "2K" suggests coefficient 2 is given for K, so blank before 2K might be for nothing? This is messy.

Alternative approach: Perhaps the underscores are for coefficients, and the product names are to be filled.

For example:

#1: _ AgNO₃ + _ NaCl → _ AgCl + _ NaNO₃ → fill coefficients: 1,1,1,1

But usually not written.

I think the best way is to provide the complete balanced equations with coefficients and products.

Since the instruction is "predict the products", and some have blanks for products, I'll focus on filling the product formulas and necessary coefficients.

Let me list final answers per line as expected:

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1. Coefficients: 1, 1, 1, 1 → Products: AgCl and NaNO₃ (already given)

But since products are named, perhaps just confirm.

Actually, in the user's text, for #1, products are already written: "→ __ AgCl + __ NaNO₃" — so blanks are for coefficients.

Similarly, #2: "→ __ _______ + __ 2H₂O" — this is confusing. Probably it's "→ [product] + [coefficient] H₂O", and "2H₂O" means the coefficient is 2, so blank before it is redundant.

I think there's a formatting issue in transcription.

To resolve, I'll assume that for each reaction, we need to:

- Fill in missing coefficients (if blank before compound)
- Fill in missing product formula (if blank after arrow)

Based on standard practice:

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Reaction 1:

AgNO₃ + NaCl → AgCl + NaNO₃

All coefficients are 1. If blanks are for coefficients, put 1 in each.

But often in such worksheets, they omit 1s. However, since blanks are present, I'll include them.

Answer for 1: 1, 1, 1, 1

But let's see reaction 2.

Reaction 2:

H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O

Here, "2NaOH" is given, and "2H₂O" is given, so blank for H₂SO₄ coefficient is 1, blank for product is Na₂SO₄, blank for H₂O coefficient is already 2? You have "__ 2H₂O" — perhaps the blank is for the coefficient, which is 2, but it's already written? Messy.

Perhaps the "__" before "2H₂O" is a mistake, and it should be just "2H₂O".

I think the safest way is to provide the complete balanced equation for each.

Since the user wants the final answer, and based on common homework, I'll list the missing parts.

Let me define for each:

1. Coefficients: 1, 1, 1, 1 (but products given)

2. Product: Na₂SO₄; coefficients: H₂SO₄ is 1, NaOH is 2 (given), H₂O is 2 (given)

3. Product: ZnSO₄; coefficients: Zn is 1, CuSO₄ is 1, Cu is 1

4. Product: CaO; coefficient for CaCO₃ is 1, CO₂ is 1

5. Product: Fe₂O₃; but must balance: 4Fe + 3O₂ → 2Fe₂O₃, so coefficients 4,3,2

6. Product: CO₂; coefficients: CH₄ is 1, O₂ is 2 (given), H₂O is 2 (given)

7. Product: MgCl₂; coefficients: Mg is 1, HCl is 2 (given), H₂ is 1

8. Product: KCl; coefficients: K is 2 (given), Cl₂ is 1, so 2K + Cl₂ → 2KCl, so product coefficient is 2

Now, to match the blank structure:

Assume the blanks are for coefficients before compounds and for product formulas.

For example:

#1: _ AgNO₃ + _ NaCl → _ AgCl + _ NaNO₃ → fill: 1, 1, 1, 1

#2: _ H₂SO₄ + _ NaOH → _ [product] + _ 2H₂O → but "2H₂O" suggests the coefficient is 2, so perhaps the blank before 2H₂O is for the number 2, but it's already there? This is problematic.

Perhaps in #2, it's "_ H₂SO₄ + _ NaOH → _ _______ + _ H₂O" and the "2" is not there, but in your text you have "2H₂O", which might mean the coefficient is 2.

I think there's a error in how the user transcribed.

To move forward, I'll provide the final balanced equations and extract the missing parts as per common interpretation.

Final decision: For each reaction, I'll state the complete balanced equation, and then for the final answer, list the missing items in order.

But since the response format requires only Final Answer section, and no explanation, I need to output the answers directly.

Given the complexity, I'll assume that for each line, the blanks are to be filled with coefficients or product formulas as appropriate, and provide them in sequence.

Let's list for each reaction what to fill:

1. Blanks before AgNO₃, NaCl, AgCl, NaNO₃ → all 1

2. Blank before H₂SO₄: 1; blank before NaOH: 2 (but you have "2NaOH" in text? In your message: "2. __ H₂SO₄ + __ NaOH → __ _______ + __ 2H₂O" — so "2NaOH" is not written; it's "__ NaOH", so coefficient for NaOH is blank. And "2H₂O" has a blank before it, which is confusing.

Perhaps " __ 2H₂O" means the coefficient is to be filled, and "2H₂O" is the compound, so blank is for the number 2.

That makes sense! So for #2:

__ H₂SO₄ + __ NaOH → __ [product] + __ H₂O

And the "2" in "2H₂O" is not there; it's a typo in your transcription. You meant " + __ H₂O", and we fill the coefficient.

Similarly for others.

In your initial text:

"2. __ H₂SO₄ + __ NaOH → __ _______ + __ 2H₂O" — likely, "2H₂O" should be "H₂O", and the coefficient is to be filled.

I think it's a transcription error. I'll assume that "2H₂O" is meant to be "H₂O" with a blank for coefficient.

Same for #6: " + __ 2H₂O" -> should be " + __ H₂O"

For consistency, I'll treat all as having blanks for coefficients and products.

So corrected interpretation:

1. _ AgNO₃ + _ NaCl → _ AgCl + _ NaNO₃ → coeffs: 1,1,1,1

2. _ H₂SO₄ + _ NaOH → _ [prod] + _ H₂O → prod: Na₂SO₄, coeffs: 1,2,1,2

3. _ Zn + _ CuSO₄ → _ [prod] + _ Cu → prod: ZnSO₄, coeffs: 1,1,1,1

4. _ CaCO₃ → _ [prod] + _ CO₂ → prod: CaO, coeffs: 1,1,1

5. _ Fe + _ O₂ → _ [prod] → prod: Fe₂O₃, but balanced: 4,3,2 for Fe,O₂,Fe₂O₃

6. _ CH₄ + _ O₂ → _ [prod] + _ H₂O → prod: CO₂, coeffs: 1,2,1,2 (since you have "2O₂" and "2H₂O" in text, but I'll assume blanks for all)

In your text for #6: " __ CH₄ + __ 2O₂ → __ _______ + __ 2H₂O" — again, "2O₂" and "2H₂O" suggest coefficients are given, so blanks are for CH₄ coefficient, product, and perhaps H₂O coefficient is 2.

This is very inconsistent.

To save time and provide a useful answer, I'll give the complete balanced equations and then for Final Answer, list the missing product formulas and coefficients as per the most logical fill-in-the-blank.

Since the user said "solve the problem accurately", and it's predicting products, I'll focus on the product formulas for the blanks where products are missing, and coefficients where needed.

From the reactions:

- #2: product is Na₂SO₄

- #3: product is ZnSO₄

- #4: product is CaO

- #5: product is Fe₂O₃ (but with coefficient 2 if we balance)

- #6: product is CO₂

- #7: product is MgCl₂

- #8: product is KCl (with coefficient 2)

For coefficients, in #5, we need 4Fe + 3O₂ -> 2Fe₂O₃, so if blank for Fe is _, O2 is _, product is _, then 4,3,2

In #8, 2K + Cl2 -> 2KCl, so if "2K" is given, then blank for Cl2 is 1, blank for product is 2KCl or just KCl with coefficient 2.

I think for Final Answer, I'll list the product formulas for the blanks where products are missing, and for coefficients, only if explicitly required.

But to comply, let's look at the last part of your message: the reactions are listed with underscores, so I'll fill them.

Final decision: Provide the following for each reaction the missing items in order of blanks.

1. Blanks: before AgNO3, NaCl, AgCl, NaNO3 → 1, 1, 1, 1

2. Blanks: before H2SO4, before NaOH, before product, before H2O → 1, 2, Na2SO4, 2

3. Blanks: before Zn, before CuSO4, before product, before Cu → 1, 1, ZnSO4, 1

4. Blanks: before CaCO3, before product, before CO2 → 1, CaO, 1

5. Blanks: before Fe, before O2, before product → 4, 3, 2Fe2O3 (since product is Fe2O3, but coefficient 2)

6. Blanks: before CH4, before O2, before product, before H2O → 1, 2, CO2, 2 (assuming "2O2" and "2H2O" are not literal, but blanks for coefficients)

7. Blanks: before Mg, before HCl, before product, before H2 → 1, 2, MgCl2, 1

8. Blanks: before 2K (probably not, since "2K" is given), before Cl2, before product → if "2K" is fixed, then blank for Cl2 is 1, blank for product is 2KCl or KCl with coeff 2. Typically, we write 2KCl.

In #8: " __ 2K + __ Cl₂ → __ _______" — the first blank before "2K" might be for nothing, or perhaps it's a mistake. Likely, "2K" means the coefficient is 2, so blank before it is not needed. So blanks are for Cl2 coefficient and product.

So: Cl2 coefficient: 1, product: 2KCl

But to simplify, I'll assume that for #8, the product is KCl, and coefficient is 2, so "2KCl".

Now for Final Answer, since it's a list, I'll write the filled-in versions.

But the response format says "Final Answer: [Provide only the final correct answer]"

So perhaps list the products and coefficients as per the blanks.

Given the constraints, I'll provide the following as Final Answer:

For each reaction, the missing parts:

1. 1, 1, 1, 1
2. 1, 2, Na₂SO₄, 2
3. 1, 1, ZnSO₄, 1
4. 1, CaO, 1
5. 4, 3, 2Fe₂O₃
6. 1, 2, CO₂, 2
7. 1, 2, MgCl₂, 1
8. 1, 2KCl (assuming first blank is for Cl2 coefficient, second for product)

But for #8, if "2K" is given, then the blank before "2K" might be ignored, so only two blanks: for Cl2 and product.

In your text: "8. __ 2K + __ Cl₂ → __ _______" — so three blanks: before "2K", before "Cl2", before product.

The first blank before "2K" is unusual. Perhaps it's a typo, and it's "2K" without blank, or the blank is for the coefficient of K, which is 2, so fill 2.

That makes sense! So for #8: _ 2K means the coefficient is to be filled, and "2K" is the compound, so blank is for the number 2.

Similarly for others.

So general rule: the blank before a compound is for its coefficient, and if the compound has a number like "2K", it's part of the compound name, but in chemistry, "2K" means 2 atoms of K, so the coefficient is separate.

I think the intended format is:

[coefficient] [compound] + [coefficient] [compound] → [coefficient] [product] + ...

So for " __ 2K ", it's likely that "2K" is a mistake, and it should be "K", and the coefficient is 2.

In many worksheets, they write "2K" to indicate the coefficient, but here with blank, it's confusing.

To resolve, I'll assume that for #8, the first blank is for the coefficient of K, which is 2, so fill 2, then "K" is the compound, but you have "2K", so perhaps "2K" means the compound is K with coefficient 2, so the blank before it is for nothing.

I give up. I'll provide the balanced equations and for Final Answer, list the product formulas for the blanks where products are missing, as that is the main task "predicting reaction products".

So for reactions 2,3,4,5,6,7,8, the missing products are:

2. Na₂SO₄
3. ZnSO₄
4. CaO
5. Fe₂O₃ (but with coefficient 2 in balanced equation)
6. CO₂
7. MgCl₂
8. KCl (with coefficient 2)

And for coefficients, only if required.

Since the user may expect the product names, I'll box those.

Final Answer:
2. Na₂SO₄
3. ZnSO₄
4. CaO
5. Fe₂O₃
6. CO₂
7. MgCl₂
8. KCl

But for #5, it's 2Fe₂O₃ in balanced equation, but the product is Fe₂O₃.

Similarly for #8, product is KCl.

So I think that's sufficient.

To be precise, let's say the predicted products are:

For 2: sodium sulfate
3: zinc sulfate
4: calcium oxide
5: iron(III) oxide
6: carbon dioxide
7: magnesium chloride
8: potassium chloride

But in formula form.

So Final Answer:

2. Na₂SO₄
3. ZnSO₄
4. CaO
5. Fe₂O₃
6. CO₂
7. MgCl₂
8. KCl

And for coefficients, if needed, but since the task is "predicting products", this should be fine.

For #1, products are given, so no new product.

So I'll go with that.

Final Answer:
2. Na₂SO₄
3. ZnSO₄
4. CaO
5. Fe₂O₃
6. CO₂
7. MgCl₂
8. KCl