CHM 130 Predicting Products Worksheet | Lecture notes Chemistry ... - Free Printable
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Step-by-step solution for: CHM 130 Predicting Products Worksheet | Lecture notes Chemistry ...
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Show Answer Key & Explanations
Step-by-step solution for: CHM 130 Predicting Products Worksheet | Lecture notes Chemistry ...
Here's the complete solution to the CHM 130 Predicting Products Worksheet, with each reaction type circled, products predicted (with correct charges and states), and balanced equations.
---
SR — Single Replacement
Aluminum is more reactive than silver → displaces Ag⁺
Balanced Equation:
3AgNO₃(aq) + Al(s) → Al(NO₃)₃(aq) + 3Ag(s)
---
AB — Acid-Base Neutralization
Strong base + strong acid → salt + water
Balanced Equation:
Ba(OH)₂(aq) + 2HNO₃(aq) → Ba(NO₃)₂(aq) + 2H₂O(l)
---
NR — No Reaction
Gold (Au) is very unreactive; it does not displace Fe²⁺ from FeCl₂.
Answer: NR
---
CB — Combustion
Hydrocarbon + O₂ → CO₂ + H₂O
Balanced Equation:
C₅H₁₂(l) + 8O₂(g) → 5CO₂(g) + 6H₂O(g)
*(Note: Water can be (l) if cooled, but (g) is typical for combustion reactions)*
---
DR — Double Replacement
Forms insoluble Ag₃PO₄ precipitate
Balanced Equation:
Na₃PO₄(aq) + 3AgNO₃(aq) → Ag₃PO₄(s) + 3NaNO₃(aq)
---
SR — Single Replacement
Zn displaces H⁺ from HCl
Balanced Equation:
Zn(s) + 2HCl(aq) → ZnCl₂(aq) + H₂(g)
---
DR — Double Replacement
Possible products: Mg(C₂H₃O₂)₂ (soluble) and AgCl (insoluble)
Actually, AgCl precipitates — so reaction occurs.
Balanced Equation:
2AgC₂H₃O₂(aq) + MgCl₂(aq) → 2AgCl(s) + Mg(C₂H₃O₂)₂(aq)
---
NR — No Reaction
Mg is more reactive than Na, but Na⁺ cannot be displaced from Na₂SO₄ because Na is *more* reactive than Mg? Wait — actually, Mg is less reactive than Na (check activity series). So Mg cannot displace Na⁺ → No Reaction
✔ NR
---
SR — Single Replacement
Cd is above H in activity series → displaces H⁺ from HCl
Balanced Equation:
2HCl(aq) + Cd(s) → CdCl₂(aq) + H₂(g)
---
SR — Single Replacement
Al reacts with strong base KOH to produce hydrogen gas and aluminate ion
Balanced Equation:
2Al(s) + 2KOH(aq) + 6H₂O(l) → 2K[Al(OH)₄](aq) + 3H₂(g)
*(Simplified form often written as: 2Al + 2KOH + 6H₂O → 2KAlO₂ + 3H₂, but K[Al(OH)₄] is more accurate in aqueous solution)*
✔ SR
---
SR — Single Replacement
Zn is more reactive than Cu → displaces Cu²⁺
Balanced Equation:
CuCl₂(aq) + Zn(s) → ZnCl₂(aq) + Cu(s)
---
AB — Acid-Base Neutralization
Phosphoric acid (triprotic) + NaOH → sodium phosphate + water
Balanced Equation:
3NaOH(aq) + H₃PO₄(aq) → Na₃PO₄(aq) + 3H₂O(l)
---
SR — Single Replacement
Al displaces H⁺ from HBr
Balanced Equation:
2Al(s) + 6HBr(aq) → 2AlBr₃(aq) + 3H₂(g)
---
SR — Single Replacement
Al is more reactive than Pb → displaces Pb²⁺
Balanced Equation:
3Pb(NO₃)₂(aq) + 2Al(s) → 2Al(NO₃)₃(aq) + 3Pb(s)
---
CB — Combustion
Heptane (C₇H₁₆) burns in oxygen
Balanced Equation:
C₇H₁₆(l) + 11O₂(g) → 7CO₂(g) + 8H₂O(g)
---
SR — Single Replacement
Mg is more reactive than Ag → displaces Ag⁺
Balanced Equation:
Mg(s) + 2AgNO₃(aq) → Mg(NO₃)₂(aq) + 2Ag(s)
---
AB — Acid-Base Neutralization
Weak acid (H₂SO₃) + strong base (KOH) → salt + water
Balanced Equation:
H₂SO₃(aq) + 2KOH(aq) → K₂SO₃(aq) + 2H₂O(l)
---
## ✔ Final Answer Summary:
| # | Type | Balanced Equation |
|---|------|-------------------|
| 1 | SR | 3AgNO₃(aq) + Al(s) → Al(NO₃)₃(aq) + 3Ag(s) |
| 2 | AB | Ba(OH)₂(aq) + 2HNO₃(aq) → Ba(NO₃)₂(aq) + 2H₂O(l) |
| 3 | NR | No Reaction |
| 4 | CB | C₅H₁₂(l) + 8O₂(g) → 5CO₂(g) + 6H₂O(g) |
| 5 | DR | Na₃PO₄(aq) + 3AgNO₃(aq) → Ag₃PO₄(s) + 3NaNO₃(aq) |
| 6 | SR | Zn(s) + 2HCl(aq) → ZnCl₂(aq) + H₂(g) |
| 7 | DR | 2AgC₂H₃O₂(aq) + MgCl₂(aq) → 2AgCl(s) + Mg(C₂H₃O₂)₂(aq) |
| 8 | NR | No Reaction |
| 9 | SR | 2HCl(aq) + Cd(s) → CdCl₂(aq) + H₂(g) |
|10 | SR | 2Al(s) + 2KOH(aq) + 6H₂O(l) → 2K[Al(OH)₄](aq) + 3H₂(g) |
|11 | SR | CuCl₂(aq) + Zn(s) → ZnCl₂(aq) + Cu(s) |
|12 | AB | 3NaOH(aq) + H₃PO₄(aq) → Na₃PO₄(aq) + 3H₂O(l) |
|13 | SR | 2Al(s) + 6HBr(aq) → 2AlBr₃(aq) + 3H₂(g) |
|14 | SR | 3Pb(NO₃)₂(aq) + 2Al(s) → 2Al(NO₃)₃(aq) + 3Pb(s) |
|15 | CB | C₇H₁₆(l) + 11O₂(g) → 7CO₂(g) + 8H₂O(g) |
|16 | SR | Mg(s) + 2AgNO₃(aq) → Mg(NO₃)₂(aq) + 2Ag(s) |
|17 | AB | H₂SO₃(aq) + 2KOH(aq) → K₂SO₃(aq) + 2H₂O(l) |
---
## 📌 Key Notes:
- Always check activity series for single replacement.
- For double replacement, check solubility rules — reaction occurs if a precipitate, gas, or water forms.
- Combustion: hydrocarbon + O₂ → CO₂ + H₂O.
- Acid-base: acid + base → salt + water.
- States matter! Use (s), (l), (g), (aq) appropriately.
Let me know if you’d like a printable version or explanations of any specific reaction!
---
1.
SR — Single Replacement
Aluminum is more reactive than silver → displaces Ag⁺
Balanced Equation:
3AgNO₃(aq) + Al(s) → Al(NO₃)₃(aq) + 3Ag(s)
---
2.
AB — Acid-Base Neutralization
Strong base + strong acid → salt + water
Balanced Equation:
Ba(OH)₂(aq) + 2HNO₃(aq) → Ba(NO₃)₂(aq) + 2H₂O(l)
---
3.
NR — No Reaction
Gold (Au) is very unreactive; it does not displace Fe²⁺ from FeCl₂.
Answer: NR
---
4.
CB — Combustion
Hydrocarbon + O₂ → CO₂ + H₂O
Balanced Equation:
C₅H₁₂(l) + 8O₂(g) → 5CO₂(g) + 6H₂O(g)
*(Note: Water can be (l) if cooled, but (g) is typical for combustion reactions)*
---
5.
DR — Double Replacement
Forms insoluble Ag₃PO₄ precipitate
Balanced Equation:
Na₃PO₄(aq) + 3AgNO₃(aq) → Ag₃PO₄(s) + 3NaNO₃(aq)
---
6.
SR — Single Replacement
Zn displaces H⁺ from HCl
Balanced Equation:
Zn(s) + 2HCl(aq) → ZnCl₂(aq) + H₂(g)
---
7.
DR — Double Replacement
Possible products: Mg(C₂H₃O₂)₂ (soluble) and AgCl (insoluble)
Actually, AgCl precipitates — so reaction occurs.
Balanced Equation:
2AgC₂H₃O₂(aq) + MgCl₂(aq) → 2AgCl(s) + Mg(C₂H₃O₂)₂(aq)
---
8.
NR — No Reaction
Mg is more reactive than Na, but Na⁺ cannot be displaced from Na₂SO₄ because Na is *more* reactive than Mg? Wait — actually, Mg is less reactive than Na (check activity series). So Mg cannot displace Na⁺ → No Reaction
✔ NR
---
9.
SR — Single Replacement
Cd is above H in activity series → displaces H⁺ from HCl
Balanced Equation:
2HCl(aq) + Cd(s) → CdCl₂(aq) + H₂(g)
---
10.
SR — Single Replacement
Al reacts with strong base KOH to produce hydrogen gas and aluminate ion
Balanced Equation:
2Al(s) + 2KOH(aq) + 6H₂O(l) → 2K[Al(OH)₄](aq) + 3H₂(g)
*(Simplified form often written as: 2Al + 2KOH + 6H₂O → 2KAlO₂ + 3H₂, but K[Al(OH)₄] is more accurate in aqueous solution)*
✔ SR
---
11.
SR — Single Replacement
Zn is more reactive than Cu → displaces Cu²⁺
Balanced Equation:
CuCl₂(aq) + Zn(s) → ZnCl₂(aq) + Cu(s)
---
12.
AB — Acid-Base Neutralization
Phosphoric acid (triprotic) + NaOH → sodium phosphate + water
Balanced Equation:
3NaOH(aq) + H₃PO₄(aq) → Na₃PO₄(aq) + 3H₂O(l)
---
13.
SR — Single Replacement
Al displaces H⁺ from HBr
Balanced Equation:
2Al(s) + 6HBr(aq) → 2AlBr₃(aq) + 3H₂(g)
---
14.
SR — Single Replacement
Al is more reactive than Pb → displaces Pb²⁺
Balanced Equation:
3Pb(NO₃)₂(aq) + 2Al(s) → 2Al(NO₃)₃(aq) + 3Pb(s)
---
15.
CB — Combustion
Heptane (C₇H₁₆) burns in oxygen
Balanced Equation:
C₇H₁₆(l) + 11O₂(g) → 7CO₂(g) + 8H₂O(g)
---
16.
SR — Single Replacement
Mg is more reactive than Ag → displaces Ag⁺
Balanced Equation:
Mg(s) + 2AgNO₃(aq) → Mg(NO₃)₂(aq) + 2Ag(s)
---
17.
AB — Acid-Base Neutralization
Weak acid (H₂SO₃) + strong base (KOH) → salt + water
Balanced Equation:
H₂SO₃(aq) + 2KOH(aq) → K₂SO₃(aq) + 2H₂O(l)
---
## ✔ Final Answer Summary:
| # | Type | Balanced Equation |
|---|------|-------------------|
| 1 | SR | 3AgNO₃(aq) + Al(s) → Al(NO₃)₃(aq) + 3Ag(s) |
| 2 | AB | Ba(OH)₂(aq) + 2HNO₃(aq) → Ba(NO₃)₂(aq) + 2H₂O(l) |
| 3 | NR | No Reaction |
| 4 | CB | C₅H₁₂(l) + 8O₂(g) → 5CO₂(g) + 6H₂O(g) |
| 5 | DR | Na₃PO₄(aq) + 3AgNO₃(aq) → Ag₃PO₄(s) + 3NaNO₃(aq) |
| 6 | SR | Zn(s) + 2HCl(aq) → ZnCl₂(aq) + H₂(g) |
| 7 | DR | 2AgC₂H₃O₂(aq) + MgCl₂(aq) → 2AgCl(s) + Mg(C₂H₃O₂)₂(aq) |
| 8 | NR | No Reaction |
| 9 | SR | 2HCl(aq) + Cd(s) → CdCl₂(aq) + H₂(g) |
|10 | SR | 2Al(s) + 2KOH(aq) + 6H₂O(l) → 2K[Al(OH)₄](aq) + 3H₂(g) |
|11 | SR | CuCl₂(aq) + Zn(s) → ZnCl₂(aq) + Cu(s) |
|12 | AB | 3NaOH(aq) + H₃PO₄(aq) → Na₃PO₄(aq) + 3H₂O(l) |
|13 | SR | 2Al(s) + 6HBr(aq) → 2AlBr₃(aq) + 3H₂(g) |
|14 | SR | 3Pb(NO₃)₂(aq) + 2Al(s) → 2Al(NO₃)₃(aq) + 3Pb(s) |
|15 | CB | C₇H₁₆(l) + 11O₂(g) → 7CO₂(g) + 8H₂O(g) |
|16 | SR | Mg(s) + 2AgNO₃(aq) → Mg(NO₃)₂(aq) + 2Ag(s) |
|17 | AB | H₂SO₃(aq) + 2KOH(aq) → K₂SO₃(aq) + 2H₂O(l) |
---
## 📌 Key Notes:
- Always check activity series for single replacement.
- For double replacement, check solubility rules — reaction occurs if a precipitate, gas, or water forms.
- Combustion: hydrocarbon + O₂ → CO₂ + H₂O.
- Acid-base: acid + base → salt + water.
- States matter! Use (s), (l), (g), (aq) appropriately.
Let me know if you’d like a printable version or explanations of any specific reaction!
Parent Tip: Review the logic above to help your child master the concept of predicting products worksheet.
