49 Balancing Chemical Equations Worksheets [with Answers] - Free Printable
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Step-by-step solution for: 49 Balancing Chemical Equations Worksheets [with Answers]
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Show Answer Key & Explanations
Step-by-step solution for: 49 Balancing Chemical Equations Worksheets [with Answers]
To solve the problem of balancing chemical equations, we need to ensure that the number of atoms of each element is the same on both sides of the equation. Here are the balanced equations for each problem:
- Balance Na: 3 NaOH
- Balance K: 3 KOH
- Balance P and O: Already balanced
Balanced Equation:
\[ \text{Na}_3\text{PO}_4 + 3\text{KOH} \rightarrow 3\text{NaOH} + \text{K}_3\text{PO}_4 \]
- Balance Mg: 1 MgCO₃
- Balance Li: 2 LiF
- Balance F: 2 LiF
- Balance C and O: Already balanced
Balanced Equation:
\[ \text{MgF}_2 + \text{Li}_2\text{CO}_3 \rightarrow \text{MgCO}_3 + 2\text{LiF} \]
- Balance P: 2 P₂O₃ (4 P atoms)
- Balance O: 6 O atoms
Balanced Equation:
\[ \text{P}_4 + 3\text{O}_2 \rightarrow 2\text{P}_2\text{O}_3 \]
- Balance Be: 1 Be(NO₃)₂
- Balance Rb: 2 RbF
- Balance N and O: Already balanced
Balanced Equation:
\[ 2\text{RbNO}_3 + \text{BeF}_2 \rightarrow \text{Be(NO}_3)_2 + 2\text{RbF} \]
- Balance Cu: 1 Cu(NO₃)₂
- Balance Ag: 2 AgNO₃
- Balance N and O: Already balanced
Balanced Equation:
\[ 2\text{AgNO}_3 + \text{Cu} \rightarrow \text{Cu(NO}_3)_2 + 2\text{Ag} \]
- Balance C: 1 CBr₄
- Balance Br: 2 Br₂
- Balance F: 2 F₂
Balanced Equation:
\[ \text{CF}_4 + 2\text{Br}_2 \rightarrow \text{CBr}_4 + 2\text{F}_2 \]
- Balance H: 2 HCN
- Balance Cu: 1 CuSO₄
- Balance S and O: Already balanced
Balanced Equation:
\[ 2\text{HCN} + \text{CuSO}_4 \rightarrow \text{H}_2\text{SO}_4 + \text{Cu(CN)}_2 \]
- Balance Ga: 1 GaF₃
- Balance Cs: 3 Cs
- Balance F: 3 CsF
Balanced Equation:
\[ \text{GaF}_3 + 3\text{Cs} \rightarrow 3\text{CsF} + \text{Ga} \]
- Balance Ba: 1 BaF₂
- Balance Pt: 1 PtS
- Balance S and F: Already balanced
Balanced Equation:
\[ \text{BaS} + \text{PtF}_2 \rightarrow \text{BaF}_2 + \text{PtS} \]
- Balance N: 2 NH₃
- Balance H: 3 H₂
Balanced Equation:
\[ \text{N}_2 + 3\text{H}_2 \rightarrow 2\text{NH}_3 \]
- Balance Na: 2 NaF
- Balance Br: 1 Br₂
- Balance F: 1 F₂
Balanced Equation:
\[ 2\text{NaF} + \text{Br}_2 \rightarrow 2\text{NaBr} + \text{F}_2 \]
- Balance Pb: 1 PbCl₂
- Balance Cl: 2 HCl
- Balance H and O: Already balanced
Balanced Equation:
\[ \text{Pb(OH)}_2 + 2\text{HCl} \rightarrow 2\text{H}_2\text{O} + \text{PbCl}_2 \]
- Balance Al: 2 AlBr₃
- Balance K: 3 K₂SO₄
- Balance Br: 6 KBr
- Balance S and O: Already balanced
Balanced Equation:
\[ 2\text{AlBr}_3 + 3\text{K}_2\text{SO}_4 \rightarrow 6\text{KBr} + \text{Al}_2(\text{SO}_4)_3 \]
- Balance C: 1 CO₂
- Balance H: 2 H₂O
- Balance O: 2 O₂
Balanced Equation:
\[ \text{CH}_4 + 2\text{O}_2 \rightarrow \text{CO}_2 + 2\text{H}_2\text{O} \]
- Balance Ca: 3 CaCl₂
- Balance Na: 6 NaCl
- Balance P and O: Already balanced
Balanced Equation:
\[ 2\text{Na}_3\text{PO}_4 + 3\text{CaCl}_2 \rightarrow 6\text{NaCl} + \text{Ca}_3(\text{PO}_4)_2 \]
- Balance K: 2 K
- Balance Cl: 2 KCl
Balanced Equation:
\[ 2\text{K} + \text{Cl}_2 \rightarrow 2\text{KCl} \]
- Balance Al: 2 AlCl₃
- Balance H: 3 H₂
- Balance Cl: 6 HCl
Balanced Equation:
\[ 2\text{Al} + 6\text{HCl} \rightarrow 3\text{H}_2 + 2\text{AlCl}_3 \]
- Balance N: 2 NF₃
- Balance F: 3 F₂
Balanced Equation:
\[ \text{N}_2 + 3\text{F}_2 \rightarrow 2\text{NF}_3 \]
- Balance S: 2 SO₂
- Balance Li: 2 Li₂Se
- Balance Se: 1 SSe₂
- Balance O: 2 Li₂O
Balanced Equation:
\[ 2\text{SO}_2 + 2\text{Li}_2\text{Se} \rightarrow \text{SSe}_2 + 2\text{Li}_2\text{O} \]
- Balance N: 2 NH₃
- Balance H: 1 H₂SO₄
- Balance S and O: Already balanced
Balanced Equation:
\[ 2\text{NH}_3 + \text{H}_2\text{SO}_4 \rightarrow (\text{NH}_4)_2\text{SO}_4 \]
\[
\boxed{
\begin{aligned}
1. & \quad \text{Na}_3\text{PO}_4 + 3\text{KOH} \rightarrow 3\text{NaOH} + \text{K}_3\text{PO}_4 \\
2. & \quad \text{MgF}_2 + \text{Li}_2\text{CO}_3 \rightarrow \text{MgCO}_3 + 2\text{LiF} \\
3. & \quad \text{P}_4 + 3\text{O}_2 \rightarrow 2\text{P}_2\text{O}_3 \\
4. & \quad 2\text{RbNO}_3 + \text{BeF}_2 \rightarrow \text{Be(NO}_3)_2 + 2\text{RbF} \\
5. & \quad 2\text{AgNO}_3 + \text{Cu} \rightarrow \text{Cu(NO}_3)_2 + 2\text{Ag} \\
6. & \quad \text{CF}_4 + 2\text{Br}_2 \rightarrow \text{CBr}_4 + 2\text{F}_2 \\
7. & \quad 2\text{HCN} + \text{CuSO}_4 \rightarrow \text{H}_2\text{SO}_4 + \text{Cu(CN)}_2 \\
8. & \quad \text{GaF}_3 + 3\text{Cs} \rightarrow 3\text{CsF} + \text{Ga} \\
9. & \quad \text{BaS} + \text{PtF}_2 \rightarrow \text{BaF}_2 + \text{PtS} \\
10. & \quad \text{N}_2 + 3\text{H}_2 \rightarrow 2\text{NH}_3 \\
11. & \quad 2\text{NaF} + \text{Br}_2 \rightarrow 2\text{NaBr} + \text{F}_2 \\
12. & \quad \text{Pb(OH)}_2 + 2\text{HCl} \rightarrow 2\text{H}_2\text{O} + \text{PbCl}_2 \\
13. & \quad 2\text{AlBr}_3 + 3\text{K}_2\text{SO}_4 \rightarrow 6\text{KBr} + \text{Al}_2(\text{SO}_4)_3 \\
14. & \quad \text{CH}_4 + 2\text{O}_2 \rightarrow \text{CO}_2 + 2\text{H}_2\text{O} \\
15. & \quad 2\text{Na}_3\text{PO}_4 + 3\text{CaCl}_2 \rightarrow 6\text{NaCl} + \text{Ca}_3(\text{PO}_4)_2 \\
16. & \quad 2\text{K} + \text{Cl}_2 \rightarrow 2\text{KCl} \\
17. & \quad 2\text{Al} + 6\text{HCl} \rightarrow 3\text{H}_2 + 2\text{AlCl}_3 \\
18. & \quad \text{N}_2 + 3\text{F}_2 \rightarrow 2\text{NF}_3 \\
19. & \quad 2\text{SO}_2 + 2\text{Li}_2\text{Se} \rightarrow \text{SSe}_2 + 2\text{Li}_2\text{O} \\
20. & \quad 2\text{NH}_3 + \text{H}_2\text{SO}_4 \rightarrow (\text{NH}_4)_2\text{SO}_4 \\
\end{aligned}
}
\]
1. \( \text{Na}_3\text{PO}_4 + \text{KOH} \rightarrow \text{NaOH} + \text{K}_3\text{PO}_4 \)
- Balance Na: 3 NaOH
- Balance K: 3 KOH
- Balance P and O: Already balanced
Balanced Equation:
\[ \text{Na}_3\text{PO}_4 + 3\text{KOH} \rightarrow 3\text{NaOH} + \text{K}_3\text{PO}_4 \]
2. \( \text{MgF}_2 + \text{Li}_2\text{CO}_3 \rightarrow \text{MgCO}_3 + \text{LiF} \)
- Balance Mg: 1 MgCO₃
- Balance Li: 2 LiF
- Balance F: 2 LiF
- Balance C and O: Already balanced
Balanced Equation:
\[ \text{MgF}_2 + \text{Li}_2\text{CO}_3 \rightarrow \text{MgCO}_3 + 2\text{LiF} \]
3. \( \text{P}_4 + \text{O}_2 \rightarrow \text{P}_2\text{O}_3 \)
- Balance P: 2 P₂O₃ (4 P atoms)
- Balance O: 6 O atoms
Balanced Equation:
\[ \text{P}_4 + 3\text{O}_2 \rightarrow 2\text{P}_2\text{O}_3 \]
4. \( \text{RbNO}_3 + \text{BeF}_2 \rightarrow \text{Be(NO}_3)_2 + \text{RbF} \)
- Balance Be: 1 Be(NO₃)₂
- Balance Rb: 2 RbF
- Balance N and O: Already balanced
Balanced Equation:
\[ 2\text{RbNO}_3 + \text{BeF}_2 \rightarrow \text{Be(NO}_3)_2 + 2\text{RbF} \]
5. \( \text{AgNO}_3 + \text{Cu} \rightarrow \text{Cu(NO}_3)_2 + \text{Ag} \)
- Balance Cu: 1 Cu(NO₃)₂
- Balance Ag: 2 AgNO₃
- Balance N and O: Already balanced
Balanced Equation:
\[ 2\text{AgNO}_3 + \text{Cu} \rightarrow \text{Cu(NO}_3)_2 + 2\text{Ag} \]
6. \( \text{CF}_4 + \text{Br}_2 \rightarrow \text{CBr}_4 + \text{F}_2 \)
- Balance C: 1 CBr₄
- Balance Br: 2 Br₂
- Balance F: 2 F₂
Balanced Equation:
\[ \text{CF}_4 + 2\text{Br}_2 \rightarrow \text{CBr}_4 + 2\text{F}_2 \]
7. \( \text{HCN} + \text{CuSO}_4 \rightarrow \text{H}_2\text{SO}_4 + \text{Cu(CN)}_2 \)
- Balance H: 2 HCN
- Balance Cu: 1 CuSO₄
- Balance S and O: Already balanced
Balanced Equation:
\[ 2\text{HCN} + \text{CuSO}_4 \rightarrow \text{H}_2\text{SO}_4 + \text{Cu(CN)}_2 \]
8. \( \text{GaF}_3 + \text{Cs} \rightarrow \text{CsF} + \text{Ga} \)
- Balance Ga: 1 GaF₃
- Balance Cs: 3 Cs
- Balance F: 3 CsF
Balanced Equation:
\[ \text{GaF}_3 + 3\text{Cs} \rightarrow 3\text{CsF} + \text{Ga} \]
9. \( \text{BaS} + \text{PtF}_2 \rightarrow \text{BaF}_2 + \text{PtS} \)
- Balance Ba: 1 BaF₂
- Balance Pt: 1 PtS
- Balance S and F: Already balanced
Balanced Equation:
\[ \text{BaS} + \text{PtF}_2 \rightarrow \text{BaF}_2 + \text{PtS} \]
10. \( \text{N}_2 + \text{H}_2 \rightarrow \text{NH}_3 \)
- Balance N: 2 NH₃
- Balance H: 3 H₂
Balanced Equation:
\[ \text{N}_2 + 3\text{H}_2 \rightarrow 2\text{NH}_3 \]
11. \( \text{NaF} + \text{Br}_2 \rightarrow \text{NaBr} + \text{F}_2 \)
- Balance Na: 2 NaF
- Balance Br: 1 Br₂
- Balance F: 1 F₂
Balanced Equation:
\[ 2\text{NaF} + \text{Br}_2 \rightarrow 2\text{NaBr} + \text{F}_2 \]
12. \( \text{Pb(OH)}_2 + \text{HCl} \rightarrow \text{H}_2\text{O} + \text{PbCl}_2 \)
- Balance Pb: 1 PbCl₂
- Balance Cl: 2 HCl
- Balance H and O: Already balanced
Balanced Equation:
\[ \text{Pb(OH)}_2 + 2\text{HCl} \rightarrow 2\text{H}_2\text{O} + \text{PbCl}_2 \]
13. \( \text{AlBr}_3 + \text{K}_2\text{SO}_4 \rightarrow \text{KBr} + \text{Al}_2(\text{SO}_4)_3 \)
- Balance Al: 2 AlBr₃
- Balance K: 3 K₂SO₄
- Balance Br: 6 KBr
- Balance S and O: Already balanced
Balanced Equation:
\[ 2\text{AlBr}_3 + 3\text{K}_2\text{SO}_4 \rightarrow 6\text{KBr} + \text{Al}_2(\text{SO}_4)_3 \]
14. \( \text{CH}_4 + \text{O}_2 \rightarrow \text{CO}_2 + \text{H}_2\text{O} \)
- Balance C: 1 CO₂
- Balance H: 2 H₂O
- Balance O: 2 O₂
Balanced Equation:
\[ \text{CH}_4 + 2\text{O}_2 \rightarrow \text{CO}_2 + 2\text{H}_2\text{O} \]
15. \( \text{Na}_3\text{PO}_4 + \text{CaCl}_2 \rightarrow \text{NaCl} + \text{Ca}_3(\text{PO}_4)_2 \)
- Balance Ca: 3 CaCl₂
- Balance Na: 6 NaCl
- Balance P and O: Already balanced
Balanced Equation:
\[ 2\text{Na}_3\text{PO}_4 + 3\text{CaCl}_2 \rightarrow 6\text{NaCl} + \text{Ca}_3(\text{PO}_4)_2 \]
16. \( \text{K} + \text{Cl}_2 \rightarrow \text{KCl} \)
- Balance K: 2 K
- Balance Cl: 2 KCl
Balanced Equation:
\[ 2\text{K} + \text{Cl}_2 \rightarrow 2\text{KCl} \]
17. \( \text{Al} + \text{HCl} \rightarrow \text{H}_2 + \text{AlCl}_3 \)
- Balance Al: 2 AlCl₃
- Balance H: 3 H₂
- Balance Cl: 6 HCl
Balanced Equation:
\[ 2\text{Al} + 6\text{HCl} \rightarrow 3\text{H}_2 + 2\text{AlCl}_3 \]
18. \( \text{N}_2 + \text{F}_2 \rightarrow \text{NF}_3 \)
- Balance N: 2 NF₃
- Balance F: 3 F₂
Balanced Equation:
\[ \text{N}_2 + 3\text{F}_2 \rightarrow 2\text{NF}_3 \]
19. \( \text{SO}_2 + \text{Li}_2\text{Se} \rightarrow \text{SSe}_2 + \text{Li}_2\text{O} \)
- Balance S: 2 SO₂
- Balance Li: 2 Li₂Se
- Balance Se: 1 SSe₂
- Balance O: 2 Li₂O
Balanced Equation:
\[ 2\text{SO}_2 + 2\text{Li}_2\text{Se} \rightarrow \text{SSe}_2 + 2\text{Li}_2\text{O} \]
20. \( \text{NH}_3 + \text{H}_2\text{SO}_4 \rightarrow (\text{NH}_4)_2\text{SO}_4 \)
- Balance N: 2 NH₃
- Balance H: 1 H₂SO₄
- Balance S and O: Already balanced
Balanced Equation:
\[ 2\text{NH}_3 + \text{H}_2\text{SO}_4 \rightarrow (\text{NH}_4)_2\text{SO}_4 \]
Final Answer:
\[
\boxed{
\begin{aligned}
1. & \quad \text{Na}_3\text{PO}_4 + 3\text{KOH} \rightarrow 3\text{NaOH} + \text{K}_3\text{PO}_4 \\
2. & \quad \text{MgF}_2 + \text{Li}_2\text{CO}_3 \rightarrow \text{MgCO}_3 + 2\text{LiF} \\
3. & \quad \text{P}_4 + 3\text{O}_2 \rightarrow 2\text{P}_2\text{O}_3 \\
4. & \quad 2\text{RbNO}_3 + \text{BeF}_2 \rightarrow \text{Be(NO}_3)_2 + 2\text{RbF} \\
5. & \quad 2\text{AgNO}_3 + \text{Cu} \rightarrow \text{Cu(NO}_3)_2 + 2\text{Ag} \\
6. & \quad \text{CF}_4 + 2\text{Br}_2 \rightarrow \text{CBr}_4 + 2\text{F}_2 \\
7. & \quad 2\text{HCN} + \text{CuSO}_4 \rightarrow \text{H}_2\text{SO}_4 + \text{Cu(CN)}_2 \\
8. & \quad \text{GaF}_3 + 3\text{Cs} \rightarrow 3\text{CsF} + \text{Ga} \\
9. & \quad \text{BaS} + \text{PtF}_2 \rightarrow \text{BaF}_2 + \text{PtS} \\
10. & \quad \text{N}_2 + 3\text{H}_2 \rightarrow 2\text{NH}_3 \\
11. & \quad 2\text{NaF} + \text{Br}_2 \rightarrow 2\text{NaBr} + \text{F}_2 \\
12. & \quad \text{Pb(OH)}_2 + 2\text{HCl} \rightarrow 2\text{H}_2\text{O} + \text{PbCl}_2 \\
13. & \quad 2\text{AlBr}_3 + 3\text{K}_2\text{SO}_4 \rightarrow 6\text{KBr} + \text{Al}_2(\text{SO}_4)_3 \\
14. & \quad \text{CH}_4 + 2\text{O}_2 \rightarrow \text{CO}_2 + 2\text{H}_2\text{O} \\
15. & \quad 2\text{Na}_3\text{PO}_4 + 3\text{CaCl}_2 \rightarrow 6\text{NaCl} + \text{Ca}_3(\text{PO}_4)_2 \\
16. & \quad 2\text{K} + \text{Cl}_2 \rightarrow 2\text{KCl} \\
17. & \quad 2\text{Al} + 6\text{HCl} \rightarrow 3\text{H}_2 + 2\text{AlCl}_3 \\
18. & \quad \text{N}_2 + 3\text{F}_2 \rightarrow 2\text{NF}_3 \\
19. & \quad 2\text{SO}_2 + 2\text{Li}_2\text{Se} \rightarrow \text{SSe}_2 + 2\text{Li}_2\text{O} \\
20. & \quad 2\text{NH}_3 + \text{H}_2\text{SO}_4 \rightarrow (\text{NH}_4)_2\text{SO}_4 \\
\end{aligned}
}
\]
Parent Tip: Review the logic above to help your child master the concept of balancing equations worksheet grade 10.
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