Question

Write balanced equations for each of the follow
reactions and identify the type of reaction:
(a) ZnCo3 ----> ZnO+CO2
(b) Cu +AgNO3 ---> Cu(NO3)2 + Ag
(c) BaCl2 + Na2S04 ---> BaSO4 + NaCl
(d) Mg +02----> MgO​

Answer 1

Answer:

(a) ZnCO3 ---------> ZnO + CO2

Elements LHS RHS

Zn 1 1

C. 1. 1

O. 3. 3

The Equation is already balanced.

(b) Cu + AgNO3 --------> Cu(NO3)2+ Ag

Elements LHS RHS

Cu 1 1

Ag 1 1

N 1 x 2= 2 2

O 2 X2= 6 6

Cu + 2AgNO3 ---------> Cu(NO3)2 + 2Ag

(c) BaCl2 + Na2SO4 --------> BaSO4 + NaCl

Elements LHS RHS

Ba 1 1

Cl 2 1 x 2

Na 2 1 x 2

S 1 1

O 4 4

BaCl2 + Na2SO4 ----------> BaSO4 + 2NaCl

(d) Mg + O2 ------> MgO

Elements LHS RHS

Mg 1 x 2 1

O 2 1 x 2

2Mg + O2 ---------> 2MgO