Frosty0110idn
Answered

IDNLearn.com provides a collaborative environment for finding accurate answers. Discover in-depth and reliable answers to all your questions from our knowledgeable community members who are always ready to assist.

Which of the following is the correctly balanced chemical equation for the reaction of [tex]Ca(OH)_2[/tex] and [tex]HNO_3[/tex]?

A. [tex]Ca(OH)_2 + HNO_3 \rightarrow Ca^{2+} + NO_3^{-}[/tex]

B. [tex]Ca(OH)_2 + 2HNO_3 \rightarrow 2H_2O + 2NO_3^{-}[/tex]

C. [tex]Ca(OH)_2 + 2HNO_3 \rightarrow H_2O + CaNO_3[/tex]

D. [tex]Ca(OH)_2 + 2HNO_3 \rightarrow 2H_2O + Ca(NO_3)_2[/tex]

Sagot :

GinnyAnsweridn
To determine which of the given options is the correctly balanced chemical equation for the reaction between [tex]\( Ca(OH)_2 \)[/tex] and [tex]\( HNO_3 \)[/tex], we need to follow these steps:

1. Identify the reactants and their products:
- Reactants: [tex]\( Ca(OH)_2 \)[/tex] (Calcium hydroxide) and [tex]\( HNO_3 \)[/tex] (Nitric acid).
- Products: Water [tex]\( H_2O \)[/tex], Calcium nitrate [tex]\( Ca(NO_3)_2 \)[/tex].

2. Determine the molecular formulas for the reactants and their respective products:
- Calcium hydroxide is [tex]\( Ca(OH)_2 \)[/tex].
- Nitric acid is [tex]\( HNO_3 \)[/tex].
- When these react, they produce water [tex]\( H_2O \)[/tex] and calcium nitrate [tex]\( Ca(NO_3)_2 \)[/tex].

3. Write the unbalanced chemical equation:
- [tex]\( Ca(OH)_2 + HNO_3 \rightarrow H_2O + Ca(NO_3)_2 \)[/tex].

4. Balance the chemical equation:
- Balance the numbers of atoms of each element on both sides of the equation.

Let's balance it step-by-step:

1. [tex]\( Ca(OH)_2 \)[/tex] has 1 calcium (Ca), 2 hydroxides (OH).
2. [tex]\( HNO_3 \)[/tex] is a source of hydrogen (H), nitrogen (N), and oxygen (O).

From the products side:
- Calcium nitrate [tex]\( Ca(NO_3)_2 \)[/tex] has 1 calcium (Ca), 2 nitrate groups [tex]\( NO_3 \)[/tex].
- Water [tex]\( H_2O \)[/tex] has 2 hydrogens and 1 oxygen.

The balanced equation should have:
- 1 calcium atom on each side.
- The same number of hydrogen, nitrogen, and oxygen atoms on both sides.

Match the number of [tex]\( NO_3 \)[/tex] groups between reactants and products, which need 2 [tex]\( HNO_3 \)[/tex] molecules:

[tex]\[ Ca(OH)_2 + 2HNO_3 \rightarrow 2H_2O + Ca(NO_3)_2 \][/tex]

This equation is balanced because:
- There is 1 Ca on both sides.
- There are 2 nitrate groups [tex]\( NO_3 \)[/tex] on both sides.
- There are 2 water molecules (each with 2H atoms and 1O atom, totaling 4H and 2O atoms, which balances the 2 hydroxide groups from [tex]\( Ca(OH)_2 \)[/tex]).

Therefore, the correct choice is:

[tex]\[ \boxed{Ca(OH)_2 + 2HNO_3 \rightarrow 2H_2O + Ca(NO_3)_2} \][/tex]

This corresponds to the fourth option: [tex]\( Ca(OH)_2 + 2HNO_3 \rightarrow 2H_2O + Ca(NO_3)_2 \)[/tex].

So, the correct answer is the 4th option.
We appreciate your presence here. Keep sharing knowledge and helping others find the answers they need. This community is the perfect place to learn together. Thanks for visiting IDNLearn.com. We’re dedicated to providing clear answers, so visit us again for more helpful information.