Respuesta :
Answer:
The answer to the question is letter a. 2
Explanation:
Write the formula of each compound
Calcium hydroxide = Ca(OH)â‚‚
Nitric acid = HNO₃
Water = Hâ‚‚O
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, Â 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] Â
Â
To balance the equation take compounds and break down the atoms of each compound.
Â
Reactants: Â
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
Â
Products: Â
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. Â Â Â
[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, Â the coefficient of water is 2.
To know more about balanced equation.
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