Question

question 8 of 10
what is the net ionic equation of 2h⁺ + so₄²⁻ + ca²⁺ + 2i⁻ → caso₄ + 2h⁺ + 2i⁻?

a. so₄²⁻ + ca²⁺ → caso₄
b. h⁺ + so₄²⁻ + ca²⁺ + 2i⁻ → caso₄ + h⁺ + i⁻
c. h₂so₄(aq) + cai₂(aq) → caso₄(s) + 2hi(aq)
d. 2h⁺ + so₄²⁻ + ca²⁺ → caso₄ + 2h⁺

Explanation:

Step1: Identify spectator ions

Spectator ions are those that appear on both sides of the ionic equation unchanged. Here, $2H^+$ and $2I^-$ are spectator ions.

Step2: Remove spectator ions

Remove $2H^+$ and $2I^-$ from both sides of the given equation $2H^+ + SO_4^{2-}+Ca^{2+}+2I^-\to CaSO_4 + 2H^+ + 2I^-$.

Answer:

A. $SO_4^{2-}+Ca^{2+}\to CaSO_4$