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NCERT Q7
Write the balanced chemical equations for the following reactions.
(b) Zinc + Silver nitrate → Zinc nitrate + Silver
Answer
- Zn + AgNO 3 → Zn(NO 3 ) 2 + Ag
|
Name of the element |
No. of atoms in reactants |
No. of atoms in products |
|
Zinc |
1 |
1 |
|
Silver |
1 |
1 |
|
Nitrogen |
1 |
2 |
|
Oxygen |
3 |
6 |
To balance Nitrogen and Oxygen,
Multiply AgNO 3 by 2
Zn + 2 AgNO 3 → Zn(NO 3 ) 2 + Ag
|
Name of the element |
No. of atoms in reactants |
No. of atoms in products |
|
Zinc |
1 |
1 |
|
Silver |
2 |
1 |
|
Nitrogen |
2 |
2 |
|
Oxygen |
6 |
6 |
To balance Silver,
Multiply Ag by 2
Zn + 2 AgNO 3 → Zn(NO 3 ) 2 + 2 Ag
|
Name of the element |
No. of atoms in reactants |
No. of atoms in products |
|
Zinc |
1 |
1 |
|
Silver |
2 |
2 |
|
Nitrogen |
2 |
2 |
|
Oxygen |
6 |
6 |
Now, all the elements are balanced and the balanced equation is
Zn + 2 AgNO 3 → Zn(NO 3 ) 2 + 2 Ag
