Question

What are the spectator ions in the reaction of potassium hydroxide with sulphuric acid?

• A. $H^{+},{OH}^{-}$
• B. $H^{+},{SO}_4^{2-}$
• C. $K^{+},{OH}^{-}$
• D. $K^{+},{SO}_4^{2-}$

Answer 1

The correct option is D $K^{+},{SO}_4^{2-}$

A spectator ion is an ion that exists as a reactant and a product in a chemical equation. in the reaction of potassium hydroxide with sulphuric acid:
$K^{+}+O{H}^{-}+H^{+}+S{O}_4^{2-}\to K^{+}+S{O}_4^{2-}+H_{2}O$
$K^{+}$ and $S{O}_4^{2-}$ ions remain same on both sides of reaction. Thus these are the spectator ions.