Question

The equation between a base and an acid is:

$\text{XOH+HY}\to {\text{XY+H}}_2\text{O}$

Which of the following is the cation part of salt?

• A. X
• B. OH
• C. H
• D. Y

Answer 1

The correct option is A X

Salt $\text{XY}$ contains ${\text{X}}^{+}$ ion and ${\text{Y}}^{-}$ ion. ${\text{X}}^{+}$ (cation) comes from metal part of the base while ${\text{Y}}^{-}$ (anion) comes from non metal part of the acid.

For example, sodium chloride $\text{(NaCl)}$ is a salt formed from the neutralization reaction of sodium hydroxide $\text{(NaOH)}$ and hydrochloric acid $\text{(HCl)}$. The reaction is as follows:

$\text{HCl (aq) + NaOH (aq)}\to {\text{NaCl (s) + H}}_2\text{O(l)}$

The cation part of ($\text{NaCl}$), that is, ${\text{Na}}^{+}$ comes from base ($\text{NaOH)}$ and its anion part that is, ${\text{Cl}}^{-}$ comes from acid $\text{(HCl)}$.