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Which of the following produces a neutral product?

A. [tex]HNO_3 + Mg(OH)_2 \rightarrow Mg(NO_3)_2 + H_2O[/tex]

B. [tex]HClO_2 + Sr(OH)_2 \rightarrow Sr(ClO_2)_2 + H_2O[/tex]

C. [tex]H_3PO_4 + NH_4OH \rightarrow (NH_4)_3PO_4 + H_2O[/tex]

D. [tex]HCl + Be(OH)_2 \rightarrow BeCl_2 + H_2O[/tex]

Answer :

To determine which reaction produces a neutral product, we need to identify a neutralization reaction, which typically involves a strong acid reacting with a strong base to produce water and a salt.

Let's examine each option:

a) [tex]\( \text{HNO}_3 + \text{Mg(OH)}_2 \rightarrow \text{Mg(NO}_3)_2 + \text{H}_2\text{O} \)[/tex]

- HNO₃ is a strong acid.
- Mg(OH)₂ is a base.
- This is a neutralization reaction as it produces water, but we’ll compare all reactions first.

b) [tex]\( \text{HClO}_2 + \text{Sr(OH)}_2 \rightarrow \text{Sr(ClO}_2)_2 + \text{H}_2\text{O} \)[/tex]

- HClO₂ is not a strong acid.
- Sr(OH)₂ is a strong base.
- This reaction produces water, but HClO₂ being a weaker acid means the solution might not be completely neutral.

c) [tex]\( \text{H}_3\text{PO}_4 + \text{NH}_4\text{OH} \rightarrow (\text{NH}_4)_3\text{PO}_4 + \text{H}_2\text{O} \)[/tex]

- H₃PO₄ is a weak acid.
- NH₄OH is also a weak base.
- This reaction might not produce a neutral solution due to the weak acid and base.

d) [tex]\( \text{HCl} + \text{Be(OH)}_2 \rightarrow \text{BeCl}_2 + \text{H}_2\text{O} \)[/tex]

- HCl is a strong acid.
- Be(OH)₂ is a strong base.
- This is a classic neutralization reaction, producing both water and a salt, typically leading to a neutral product.

Among these options, option d) involves a strong acid and a strong base, which is characteristic of reactions that produce a neutral product, water. Therefore, the reaction that most likely produces a neutral product is:

d) [tex]\( \text{HCl} + \text{Be(OH)}_2 \rightarrow \text{BeCl}_2 + \text{H}_2\text{O} \)[/tex]

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