Question

Balance the equation:Ca(OH)2 + HNO3 => H2O + Ca(NO3)2

Answer 1

1) Balance the chemical equation

`Ca(OH)_2+HNO_3\rightarrow H_2O+Ca(NO_3)_2`

List the elements (or polyatomic ions) in the reactants

Ca: 1

OH: 2

H: 1

NO3: 1

List the elements (or polyatomic ions) in the products

Ca: 1

NO3: 2

H: 2

O: 1

Calcium is already balanced.

Balance nitrogen

`Ca(OH)_2+2HNO_3\rightarrow H_2O+Ca(NO_3)_2`

Reactants:

Ca: 1

OH: 2

H: 2

NO3: 2

Products:

Ca: 1

NO3: 2

H: 2

O: 1

Balance hydrogen

`Ca(OH)_2+2HNO_3\rightarrow2H_2O+Ca(NO_3)_2`

Reactants:

Ca: 1

O: 8

H: 4

N: 2

Products:

Ca: 1

O: 8

H: 4

N: 2

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