Question

Protons ( $H^{+}$ ions ) are found when a substance is dissolved in water. The substance is ___________.

• A. $KOH$
• B. $NaH$
• C. $H_{2}S{O}_4$
• D. $N{H}_3$
• E. $C{H}_4$

Answer 1

The correct option is C $H_{2}S{O}_4$

An acid is a proton $\left(H^{+}\right)$ donor. A base is a proton (hydrogen ion) acceptor. Acids dissociate into $H^{+}$ ions in water. The acid $H_{2}S{O}_4$ dissociates into $H^{+}$ and $S{O}_4^{2-}$ will show the presence of $H^{+}$ even after they dissolve in water. $KOH$ gives $O{H}^{-}$ ion.

$NaH$ gives $H^{-}$ ions while $N{H}_3$ is also a base forms $N{H}_4^{+}$ in water. $C{H}_4$ is not react as acid nor like a base.