Chapter 15, Problem 43A

Interpretation Introduction

Interpretation: The number of equivalents of hydroxide ions needed to react with 1.53 equivalents of hydrogen ions is to be given and explained.

Concept introduction: In neutralization reaction, one equivalent of hydroxide ion neutralizes one equivalent of hydrogen ion as both carry unit charges with opposite signs as follows:

  ${\text{H}}^{+}\left(aq\right)+{\text{OH}}^{-}\left(aq\right)\to {\text{H}}_{\text{2}}\text{O }\left(l\right)$

Answer to Problem 43A

The number of equivalents of hydroxide ions needed to react with 1.53 equivalents of hydrogen ions is to 1.53.

Explanation of Solution

In neutralization reaction, one equivalent of hydroxide ion neutralizes one equivalent of hydrogen ion as both carry unit charges with opposite signs as follows:

  ${\text{H}}^{+}\left(aq\right)+{\text{OH}}^{-}\left(aq\right)\to {\text{H}}_{\text{2}}\text{O }\left(l\right)$

So, the number of equivalents of hydroxide ions needed to react with 1.53 equivalents of hydrogen ions is to 1.53. Even without a balanced chemical equation, this can be told as the chemistry of reaction of hydroxide ion and hydrogen ion is not affected by the coefficients in the balanced chemical equation.

Conclusion

The number of equivalents of hydroxide ions needed to react with 1.53 equivalents of hydrogen ions is to 1.53.