Respuesta :
Answer:
The answer to the question is letter a. 2
Explanation:
Write the formula of each compound
Calcium hydroxide = Ca(OH)₂
Nitric acid = HNO₃
Water = H₂O
Calcium nitrate = Ca(NO₃)₂
Chemical Reaction
Ca(OH)₂ + HNO₃ ⇒ Ca(NO₃)₂ + H₂O
Reactants Elements Products
1 Ca 1
1 N 2
3 H 2
5 O 7
Balanced Chemical Reaction
Ca(OH)₂ + 2HNO₃ ⇒ Ca(NO₃)₂ + 2H₂O
Reactants Elements Products
1 Ca 1
2 N 2
4 H 4
8 O 8
In the balanced chemical reaction for the neutralization of calcium hydroxide with nitric acid, the coefficient of water is 2.
Nitric acid and calcium hydroxide as the reactants and calcium nitrate and water as the products.
[tex]\bold {HNO_3+Ca(OH)_2 \rightarrow Ca(NO_3)_2+H_2O}[/tex]
To balance the equation take compounds and break down the atoms of each compound.
Reactants:
HNO3 has 1 H atom, 1 N atom and 3 O atoms
Ca(OH)2 has 1 Ca atom, 2 O atoms and 2 H atoms
Left side has a total of 3 H atoms, 1 N atom, 1 Ca atom, and 5 O atoms
Products:
Ca(NO3)2 has 1 Ca atom, 2 N atoms (1 x 2) and 6 O atoms (3 x 2)
H2O has 2 H atoms, and 1 O atoms
Right side has a total of 1 Ca atom, 2 N atoms, 7 O atoms, 2 H atoms
So, now put the numbers that make the number of atoms in each side equal.
[tex]\bold {2HNO_3+Ca(OH)_2 \rightarrow Ca(NO_3)_2 + 2H_2O}[/tex]
Therefore, In the balanced chemical reaction for the neutralization of calcium hydroxide with nitric acid, the coefficient of water is 2.
To know more about balanced equation.
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