Balance the following chemical equations.
(a) HNO 3 +Ca(OH) 2 → Ca(NO 3 ) 2 + H 2 O
Answer
- HNO 3 + Ca(OH) 2 → Ca(NO 3 ) 2 + H 2 O
|
Name of the element |
No. of atoms in Reactants |
No. of atoms in products |
|
Hydrogen |
3 |
2 |
|
Nitrogen |
1 |
2 |
|
Oxygen |
5 |
7 |
|
Calcium |
1 |
1 |
To balance Nitrogen,
Multiply HNO 3 by 2
2 HNO 3 + Ca(OH) 2 → Ca(NO 3 ) 2 + H 2 O
|
Name of the element |
No. of atoms in Reactants |
No. of atoms in products |
|
Hydrogen |
4 |
2 |
|
Nitrogen |
2 |
2 |
|
Oxygen |
8 |
7 |
|
Calcium |
1 |
1 |
To balance Hydrogen,
Multiply H 2 O by 2
2 HNO 3 + Ca(OH) 2 → Ca(NO 3 ) 2 + 2 H 2 O
|
Name of the element |
No. of atoms in Reactants |
No. of atoms in products |
|
Hydrogen |
4 |
4 |
|
Nitrogen |
2 |
2 |
|
Oxygen |
8 |
8 |
|
Calcium |
1 |
1 |
Now, all the elements are balanced and the balanced equation is
2 HNO 3 + Ca(OH) 2 → Ca(NO 3 ) 2 + 2 H 2 O
2 HNO 3 + Ca(OH) 2 → Ca(NO 3 ) 2 + 2 H 2 O
