Question

Balance the chemical equations, given below and categorize them as combination ,

decomposition , displacement , precipitation , and neutralization reactions.

(i)

Ca + O2 ---→ CaO

(ii)

H2O --→ H2 + O2

(iii)

K + HCl ---→ KCl + H2↑

(iv)

AgNO3 + NaBr ---→ NaNO3 + AgBr↓

(v)

MgCO3 ---→ MgO + CO2​

Answer 1

Explanation:

(i) 2ca+o2------2cAo

(ii)2H2O--------2H2+O2

(iii)2K+2HCL-------2KCL+H2

(iv)As it is.

(v)As it is.

Answer 2

1. 2Ca+O2=2CaO

combination reaction

2.2H2O=2H2+O2

decomposition reaction

3.2k+2HCl=2KCl+H2

neutralization reaction

4. AgNO3+NaBr=NaNO3+AgBr (no change it is already balance )

precipitation reaction

5.MgCO3=MgO+CO2(the equation is already balance)

displacement reaction.

hope this will be helpful for you