Balancing Equations Worksheet with 20 chemical equations to balance.
Balancing Equations Worksheet with 20 chemical equations to balance, including reactants and products with blank spaces for coefficients.
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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.
- Balance C and N: 2 CN⁻ in Cu(CN)₂
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: 1 BaS
- Balance F: 1 PtF₂
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: 2 H₂O
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: 2 Ca₃(PO₄)₂
Balanced Equation:
\[ 6\text{Na}_3\text{PO}_4 + 6\text{CaCl}_2 \rightarrow 18\text{NaCl} + 2\text{Ca}_3(\text{PO}_4)_2 \]
- Balance K: 2 K
- Balance Cl: 2 KCl
Balanced Equation:
\[ 2\text{K} + \text{Cl}_2 \rightarrow 2\text{KCl} \]
- Balance Al: 2 Al
- Balance H: 6 HCl
- Balance Cl: 2 AlCl₃
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: 1 SSe₂
- Balance Se: 1 Li₂Se
- Balance Li: 2 Li₂O
- Balance O: 2 SO₂
Balanced Equation:
\[ 2\text{SO}_2 + 2\text{Li}_2\text{Se} \rightarrow \text{SSe}_2 + 4\text{Li}_2\text{O} \]
- Balance N: 2 NH₃
- Balance H: 1 H₂SO₄
- Balance S and O: Already balanced.
Balanced Equation:
\[ 2\text{NH}_3 + \text{H}_2\text{SO}_4 \rightarrow (\text{NH}_4)_2\text{SO}_4 \]
\[
\boxed{
\begin{aligned}
1. & \quad \text{Na}_3\text{PO}_4 + 3\text{KOH} \rightarrow 3\text{NaOH} + \text{K}_3\text{PO}_4 \\
2. & \quad \text{MgF}_2 + \text{Li}_2\text{CO}_3 \rightarrow \text{MgCO}_3 + 2\text{LiF} \\
3. & \quad \text{P}_4 + 3\text{O}_2 \rightarrow 2\text{P}_2\text{O}_3 \\
4. & \quad 2\text{RbNO}_3 + \text{BeF}_2 \rightarrow \text{Be(NO}_3)_2 + 2\text{RbF} \\
5. & \quad 2\text{AgNO}_3 + \text{Cu} \rightarrow \text{Cu(NO}_3)_2 + 2\text{Ag} \\
6. & \quad \text{CF}_4 + 2\text{Br}_2 \rightarrow \text{CBr}_4 + 2\text{F}_2 \\
7. & \quad 2\text{HCN} + \text{CuSO}_4 \rightarrow \text{H}_2\text{SO}_4 + \text{Cu(CN)}_2 \\
8. & \quad \text{GaF}_3 + 3\text{Cs} \rightarrow 3\text{CsF} + \text{Ga} \\
9. & \quad \text{BaS} + \text{PtF}_2 \rightarrow \text{BaF}_2 + \text{PtS} \\
10. & \quad \text{N}_2 + 3\text{H}_2 \rightarrow 2\text{NH}_3 \\
11. & \quad 2\text{NaF} + \text{Br}_2 \rightarrow 2\text{NaBr} + \text{F}_2 \\
12. & \quad \text{Pb(OH)}_2 + 2\text{HCl} \rightarrow 2\text{H}_2\text{O} + \text{PbCl}_2 \\
13. & \quad 2\text{AlBr}_3 + 3\text{K}_2\text{SO}_4 \rightarrow 6\text{KBr} + \text{Al}_2(\text{SO}_4)_3 \\
14. & \quad \text{CH}_4 + 2\text{O}_2 \rightarrow \text{CO}_2 + 2\text{H}_2\text{O} \\
15. & \quad 6\text{Na}_3\text{PO}_4 + 6\text{CaCl}_2 \rightarrow 18\text{NaCl} + 2\text{Ca}_3(\text{PO}_4)_2 \\
16. & \quad 2\text{K} + \text{Cl}_2 \rightarrow 2\text{KCl} \\
17. & \quad 2\text{Al} + 6\text{HCl} \rightarrow 3\text{H}_2 + 2\text{AlCl}_3 \\
18. & \quad \text{N}_2 + 3\text{F}_2 \rightarrow 2\text{NF}_3 \\
19. & \quad 2\text{SO}_2 + 2\text{Li}_2\text{Se} \rightarrow \text{SSe}_2 + 4\text{Li}_2\text{O} \\
20. & \quad 2\text{NH}_3 + \text{H}_2\text{SO}_4 \rightarrow (\text{NH}_4)_2\text{SO}_4 \\
\end{aligned}
}
\]
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.
- Balance C and N: 2 CN⁻ in Cu(CN)₂
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: 1 BaS
- Balance F: 1 PtF₂
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: 2 H₂O
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: 2 Ca₃(PO₄)₂
Balanced Equation:
\[ 6\text{Na}_3\text{PO}_4 + 6\text{CaCl}_2 \rightarrow 18\text{NaCl} + 2\text{Ca}_3(\text{PO}_4)_2 \]
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 Al
- Balance H: 6 HCl
- Balance Cl: 2 AlCl₃
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: 1 SSe₂
- Balance Se: 1 Li₂Se
- Balance Li: 2 Li₂O
- Balance O: 2 SO₂
Balanced Equation:
\[ 2\text{SO}_2 + 2\text{Li}_2\text{Se} \rightarrow \text{SSe}_2 + 4\text{Li}_2\text{O} \]
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:
\[
\boxed{
\begin{aligned}
1. & \quad \text{Na}_3\text{PO}_4 + 3\text{KOH} \rightarrow 3\text{NaOH} + \text{K}_3\text{PO}_4 \\
2. & \quad \text{MgF}_2 + \text{Li}_2\text{CO}_3 \rightarrow \text{MgCO}_3 + 2\text{LiF} \\
3. & \quad \text{P}_4 + 3\text{O}_2 \rightarrow 2\text{P}_2\text{O}_3 \\
4. & \quad 2\text{RbNO}_3 + \text{BeF}_2 \rightarrow \text{Be(NO}_3)_2 + 2\text{RbF} \\
5. & \quad 2\text{AgNO}_3 + \text{Cu} \rightarrow \text{Cu(NO}_3)_2 + 2\text{Ag} \\
6. & \quad \text{CF}_4 + 2\text{Br}_2 \rightarrow \text{CBr}_4 + 2\text{F}_2 \\
7. & \quad 2\text{HCN} + \text{CuSO}_4 \rightarrow \text{H}_2\text{SO}_4 + \text{Cu(CN)}_2 \\
8. & \quad \text{GaF}_3 + 3\text{Cs} \rightarrow 3\text{CsF} + \text{Ga} \\
9. & \quad \text{BaS} + \text{PtF}_2 \rightarrow \text{BaF}_2 + \text{PtS} \\
10. & \quad \text{N}_2 + 3\text{H}_2 \rightarrow 2\text{NH}_3 \\
11. & \quad 2\text{NaF} + \text{Br}_2 \rightarrow 2\text{NaBr} + \text{F}_2 \\
12. & \quad \text{Pb(OH)}_2 + 2\text{HCl} \rightarrow 2\text{H}_2\text{O} + \text{PbCl}_2 \\
13. & \quad 2\text{AlBr}_3 + 3\text{K}_2\text{SO}_4 \rightarrow 6\text{KBr} + \text{Al}_2(\text{SO}_4)_3 \\
14. & \quad \text{CH}_4 + 2\text{O}_2 \rightarrow \text{CO}_2 + 2\text{H}_2\text{O} \\
15. & \quad 6\text{Na}_3\text{PO}_4 + 6\text{CaCl}_2 \rightarrow 18\text{NaCl} + 2\text{Ca}_3(\text{PO}_4)_2 \\
16. & \quad 2\text{K} + \text{Cl}_2 \rightarrow 2\text{KCl} \\
17. & \quad 2\text{Al} + 6\text{HCl} \rightarrow 3\text{H}_2 + 2\text{AlCl}_3 \\
18. & \quad \text{N}_2 + 3\text{F}_2 \rightarrow 2\text{NF}_3 \\
19. & \quad 2\text{SO}_2 + 2\text{Li}_2\text{Se} \rightarrow \text{SSe}_2 + 4\text{Li}_2\text{O} \\
20. & \quad 2\text{NH}_3 + \text{H}_2\text{SO}_4 \rightarrow (\text{NH}_4)_2\text{SO}_4 \\
\end{aligned}
}
\]
Parent Tip: Review the logic above to help your child master the concept of balanced and unbalanced chemical equations worksheet.
![Grade 9 Physical Science: Chemical Reactions] Balancing equations ...](/images2/balanced-and-unbalanced-chemical-equations-worksheet/balanced-and-unbalanced-chemical-equations-worksheet-19.jpg)
