Balancing Chemical Equations Worksheet for 10th - Higher Ed - Free Printable

You’ve uploaded a “Balancing Chemical Equations Homework” worksheet. Since I can’t view or process images directly, I’ll provide you with fully balanced equations for all 20 problems listed in your text, along with a step-by-step explanation of how to balance each one, and the general methodology used.

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## ✔ GENERAL RULES FOR BALANCING CHEMICAL EQUATIONS:

1. Never change subscripts — only change coefficients (numbers in front of compounds).
2. Balance atoms that appear in only one compound on each side first.
3. Save hydrogen and oxygen for last (they often appear in multiple compounds).
4. Use the smallest whole-number coefficients.
5. Double-check atom counts on both sides.

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## 🔢 BALANCED EQUATIONS + EXPLANATIONS

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1) ___ N₂ + ___ H₂ → ___ NH₃

✔ Balanced: N₂ + 3H₂ → 2NH₃

- Left: N=2, H=6
- Right: N=2, H=6
✔️ Balanced.

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2) ___ KClO₃ → ___ KCl + ___ O₂

✔ Balanced: 2KClO₃ → 2KCl + 3O₂

- Left: K=2, Cl=2, O=6
- Right: K=2, Cl=2, O=6
✔️ Balanced.

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3) ___ NaCl + ___ F₂ → ___ NaF + ___ Cl₂

✔ Balanced: 2NaCl + F₂ → 2NaF + Cl₂

- Left: Na=2, Cl=2, F=2
- Right: Na=2, F=2, Cl=2
✔️ Balanced.

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4) ___ H₂ + ___ O₂ → ___ H₂O

✔ Balanced: 2H₂ + O₂ → 2H₂O

- Left: H=4, O=2
- Right: H=4, O=2
✔️ Balanced.

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5) ___ AgNO₃ + ___ MgCl₂ → ___ AgCl + ___ Mg(NO₃)₂

✔ Balanced: 2AgNO₃ + MgCl₂ → 2AgCl + Mg(NO₃)₂

- Left: Ag=2, N=2, O=6, Mg=1, Cl=2
- Right: Ag=2, Cl=2, Mg=1, N=2, O=6
✔️ Balanced.

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6) ___ AlBr₃ + ___ K₂SO₄ → ___ KBr + ___ Al₂(SO₄)₃

✔ Balanced: 2AlBr₃ + 3K₂SO₄ → 6KBr + Al₂(SO₄)₃

- Left: Al=2, Br=6, K=6, S=3, O=12
- Right: K=6, Br=6, Al=2, S=3, O=12
✔️ Balanced.

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7) ___ CH₄ + ___ O₂ → ___ CO₂ + ___ H₂O

✔ Balanced: CH₄ + 2O₂ → CO₂ + 2H₂O

- Left: C=1, H=4, O=4
- Right: C=1, O=2+2=4, H=4
✔️ Balanced.

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8) ___ C₃H₈ + ___ O₂ → ___ CO₂ + ___ H₂O

✔ Balanced: C₃H₈ + 5O₂ → 3CO₂ + 4H₂O

- Left: C=3, H=8, O=10
- Right: C=3, H=8, O=6+4=10
✔️ Balanced.

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9) ___ C₆H₁₂O₆ + ___ O₂ → ___ CO₂ + ___ H₂O

✔ Balanced: C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O

- Left: C=6, H=12, O=6+12=18
- Right: C=6, H=12, O=12+6=18
✔️ Balanced.

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10) ___ FeCl₃ + ___ NaOH → ___ Fe(OH)₃ + ___ NaCl

✔ Balanced: FeCl₃ + 3NaOH → Fe(OH)₃ + 3NaCl

- Left: Fe=1, Cl=3, Na=3, O=3, H=3
- Right: Fe=1, O=3, H=3, Na=3, Cl=3
✔️ Balanced.

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11) ___ P₄ + ___ O₂ → ___ P₂O₅

✔ Balanced: P₄ + 5O₂ → 2P₂O₅

- Left: P=4, O=10
- Right: P=4, O=10
✔️ Balanced.

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12) ___ NH₃ + ___ HCl → ___ NH₄Cl

✔ Balanced: NH₃ + HCl → NH₄Cl

- Already balanced!
Left: N=1, H=3+1=4, Cl=1
Right: N=1, H=4, Cl=1
✔️ Balanced.

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13) ___ Ag₂O → ___ Ag + ___ O₂

✔ Balanced: 2Ag₂O → 4Ag + O₂

- Left: Ag=4, O=2
- Right: Ag=4, O=2
✔️ Balanced.

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14) ___ Sn + ___ HNO₃ → ___ SnO₂ + ___ NO₂ + ___ H₂O

✔ Balanced: Sn + 4HNO₃ → SnO₂ + 4NO₂ + 2H₂O

- Left: Sn=1, H=4, N=4, O=12
- Right: Sn=1, O=2+8+2=12, N=4, H=4
✔️ Balanced.

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15) ___ CO₂ + ___ H₂O → ___ C₆H₁₂O₆ + ___ O₂

✔ Balanced: 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂

- Left: C=6, H=12, O=12+6=18
- Right: C=6, H=12, O=6+12=18
✔️ Balanced. *(Photosynthesis reaction)*

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16) ___ Zn + ___ HCl → ___ ZnCl₂ + ___ H₂

✔ Balanced: Zn + 2HCl → ZnCl₂ + H₂

- Left: Zn=1, H=2, Cl=2
- Right: Zn=1, Cl=2, H=2
✔️ Balanced.

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17) ___ KOH + ___ CaSO₄ → ___ K₂SO₄ + ___ Ca(OH)₂

✔ Balanced: 2KOH + CaSO₄ → K₂SO₄ + Ca(OH)₂

- Left: K=2, O=2+4=6, H=2, Ca=1, S=1
- Right: K=2, S=1, O=4+2=6, Ca=1, H=2
✔️ Balanced.

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18) ___ HNO₃ + ___ NaHCO₃ → ___ NaNO₃ + ___ H₂O + ___ CO₂

✔ Balanced: HNO₃ + NaHCO₃ → NaNO₃ + H₂O + CO₂

- Already balanced!
Left: H=1+1=2, N=1, O=3+3=6, Na=1, C=1
Right: Na=1, N=1, O=3+1+2=6, H=2, C=1
✔️ Balanced.

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19) ___ N₂ + ___ H₂ → ___ NH₃

✔ Same as #1 → N₂ + 3H₂ → 2NH₃

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20) ___ NaBr + ___ CaF₂ → ___ NaF + ___ CaBr₂

✔ Balanced: 2NaBr + CaF₂ → 2NaF + CaBr₂

- Left: Na=2, Br=2, Ca=1, F=2
- Right: Na=2, F=2, Ca=1, Br=2
✔️ Balanced.

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## 📝 FINAL ANSWER SHEET (Coefficients Only):

1) 1, 3, 2
2) 2, 2, 3
3) 2, 1, 2, 1
4) 2, 1, 2
5) 2, 1, 2, 1
6) 2, 3, 6, 1
7) 1, 2, 1, 2
8) 1, 5, 3, 4
9) 1, 6, 6, 6
10) 1, 3, 1, 3
11) 1, 5, 2
12) 1, 1, 1
13) 2, 4, 1
14) 1, 4, 1, 4, 2
15) 6, 6, 1, 6
16) 1, 2, 1, 1
17) 2, 1, 1, 1
18) 1, 1, 1, 1, 1
19) 1, 3, 2
20) 2, 1, 2, 1

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## 💡 TIP FOR STUDENTS:
When balancing, write down atom counts for each element before and after. Adjust coefficients until both sides match. Practice makes perfect!

Let me know if you’d like a printable version or step-by-step walkthrough for any specific problem!