Question

1. Pb + FeSO4  PbSO4 + Fe
2. CaCO3  CaO + CO2
3. P4 + 3 O2  2 P2O3
4. 2 RbNO3 + BeF2  Be(NO3)2 + 2 RbF
5. AgNO3 + Cu  Cu(NO3)2 + 2 Ag
Balance these chemical equation.

Answer 1

Answer:

first 4 equation is balanced

2AgNO3 + 2Cu = Cu(NO3)2 + 2Ag

Answer 2

Answer:-

$\tt\dag{Pb+FeSO_{4}\longrightarrow PbSO_{4} + Fe}$

$\tt\dag{CaCO_{3}\longrightarrow CaO + CO_{2}}$

$\tt\dag{P_{4}+3O_{2} \longrightarrow 2P_{2}O_{3}}$

$\tt\dag{2RbNO_{3}+BeF_{2}\longrightarrow Be{(NO_{3})}_{2} + 2RbF}$

The first 4 are balanced equations.

$\tt\dag{AgNO_{3}+Cu \longrightarrow Cu(NO_{3}){2} + 2Ag}$

The last one is to be balanced.

$\boxed{\begin{tabular}{c|c|c}\bf{Element} & \bf{LHS} & \bf{RHS}\\\cline{1-3}Ag & 1 & 2\\\cline{1-3}N & 1 & 2\\\cline{1-3}O & 3 & 6 \\\cline{1 - 3}Cu & 1 & 1\end{tabular}}$

Balancing Ag,

$\tt\dag{2AgNO_{3}+Cu \longrightarrow Cu(NO_{3}){2} + 2Ag}$

Now, checking if everything is balanced.

$\boxed{\begin{tabular}{c|c|c}\bf{Element} & \bf{LHS} & \bf{RHS}\\\cline{1-3}Ag & 2 & 2\\\cline{1-3}N & 2 & 2\\\cline{1-3}O & 6 & 6 \\\cline{1 - 3}Cu & 1 & 1\end{tabular}}$

So, The equation is balanced.

$\rule{200}2$