Chapter 10, Problem 76QAP

The freezing point of 0.10 M KHSO₃ is -0.38°C. Which of the following equations best represents what happens when KHSO₃ dissolves in water?

(a) ${\text{KHSO}}_3\left(s\right)\to {\text{KHSO}}_3\left(aq\right)$

(b) ${\text{KHSO}}_3\left(s\right)\to {\text{K}}^{+}\left(aq\right)+{\text{HSO}}_3{}^{-}\left(aq\right)$

(c) ${\text{KHSO}}_3\left(s\right)\to {\text{K}}^{+}\left(aq\right)+{\text{SO}}_3{}^{2-}\left(aq\right)+{\text{H}}^{+}\left(aq\right)$