Chapter 19, Problem 10STP

Interpretation Introduction

Interpretation : The general formula for the salt formed in the neutralization reaction is to be identified.

Concept Introduction : Salt and water are created when bases and acids react.

A strong acid and strong base react completely to form a neutral solution. A neutralization reaction is a name for this kind of reaction.

Answer to Problem 10STP

Correct answer: Option (A)

The general formula for the reaction is $\text{PQ}$ .

Explanation of Solution

Reason for correct option:

For each element participating in the reaction, a chemical equation is balanced if it has an equal atom count on the product and reactant sides.

The acid-base reaction takes place between sulfuric acid and magnesium hydroxide giving magnesium sulfate salt and water.

  ${\text{H}}_2{\text{SO}}_4\left(aq\right)\text{+}\text{Mg}{\left(\text{OH}\right)}_2\left(aq\right)\to {\text{MgSO}}_4\left(aq\right)\text{+}2{\text{H}}_{\text{2}}\text{O}\left(l\right)$

The cation is ${\text{Mg}}^{2+}$ and anion is ${\text{SO}}_4^{2-}$ .

Since the cation is one, it belongs to formula $\text{PQ}$ .

So, option (A) is the correct answer.

Conclusion

Reasons for incorrect options:

Options (D), (B), (C): All these options are irrelevant, because according to the product, the cation and anion are taken.