Question

Balance the following equations and state what reaction type is taking place:
1)
____ C5H12 + ____ O2  ____ CO2 + ____ H2O + heat
Reaction type: ____________________
2)
____ K3PO4 + ____ BaCl2  ____ Ba3(PO4)2 + ____ KCl
Reaction type: ____________________
3)
____ Al(OH)3 + ____ H2SO4  ____ Al2(SO4)3 + ____ H2O
Reaction type: ____________________
4)
____ HCl + ____ K2CO3  ____ CO2 + ____ H2O + ____ KCl
Reaction type: ____________________
5)
____ AgNO3 + _____ Na2CO3  ____ Ag2CO3 + ____ NaNO3
Reaction type: ____________________
6)
____ Al2O3 + heat  ____ Al + ____ O2
Reaction type: ____________________
7)
____ Al + ____ HCl  ____ H2 + ____ AlCl3
Reaction type: ____________________
8)
____ Cu(OH)2  ____ H2O + ____ CuO
Reaction type: ____________________

Answer 1

Here are the balanced equations and their respective reaction types:

1)
Balanced equation:
\[ 2 \, \text{C}_5\text{H}_{12} + 13 \, \text{O}_2 \rightarrow 10 \, \text{CO}_2 + 12 \, \text{H}_2\text{O} + \text{heat} \]
Reaction type: **Combustion**

2)
Balanced equation:
\[ 2 \, \text{K}_3\text{PO}_4 + 3 \, \text{BaCl}_2 \rightarrow 1 \, \text{Ba}_3(\text{PO}_4)_2 + 6 \, \text{KCl} \]
Reaction type: **Double displacement (metathesis)**

3)
Balanced equation:
\[ 2 \, \text{Al(OH)}_3 + 3 \, \text{H}_2\text{SO}_4 \rightarrow 1 \, \text{Al}_2(\text{SO}_4)_3 + 6 \, \text{H}_2\text{O} \]
Reaction type: **Acid-base reaction**

4)
Balanced equation:
\[ 2 \, \text{HCl} + 1 \, \text{K}_2\text{CO}_3 \rightarrow 1 \, \text{CO}_2 + 1 \, \text{H}_2\text{O} + 2 \, \text{KCl} \]
Reaction type: **Acid-base reaction**

5)
Balanced equation:
\[ 2 \, \text{AgNO}_3 + 1 \, \text{Na}_2\text{CO}_3 \rightarrow 1 \, \text{Ag}_2\text{CO}_3 + 2 \, \text{NaNO}_3 \]
Reaction type: **Double displacement (metathesis)**

6)
Balanced equation:
\[ 2 \, \text{Al}_2\text{O}_3 + \text{heat} \rightarrow 4 \, \text{Al} + 3 \, \text{O}_2 \]
Reaction type: **Decomposition**

7)
Balanced equation:
\[ 2 \, \text{Al} + 6 \, \text{HCl} \rightarrow 3 \, \text{H}_2 + 2 \, \text{AlCl}_3 \]
Reaction type: **Single displacement**

8)
Balanced equation:
\[ 1 \, \text{Cu(OH)}_2 \rightarrow 1 \, \text{H}_2\text{O} + 1 \, \text{CuO} \]
Reaction type: **Decomposition**

Note: Ensure to adjust coefficients based on stoichiometry where necessary, particularly in equations involving multiple products or reactants.