Question

question 5
1 point
select the correct net ionic equation for the equation shown.
li₂s (aq) + cui₂ (aq) →
a cu²+ (aq) + s²- (aq) → cus (s)
b cu²+ (aq) + 2 i- (aq) → cui₂ (aq)
c li+ (aq) + i- (aq) → lil (s)
d 2 li+ (aq) + s²- (aq) → li₂s (aq)

Explanation:

Step1: Write the complete ionic equation

First, we write the complete ionic equation for the reaction \(Li_2S(aq)+CuI_2(aq)\).
\(2Li^{+}(aq)+S^{2 - }(aq)+Cu^{2+}(aq)+2I^{-}(aq)\)

Step2: Identify spectator ions

Spectator ions are ions that do not participate in the reaction. In this case, \(Li^{+}\) and \(I^{-}\) are spectator ions.

Step3: Write the net - ionic equation

We remove the spectator ions (\(Li^{+}\) and \(I^{-}\)) from the complete ionic equation.
The net - ionic equation is \(Cu^{2+}(aq)+S^{2 - }(aq)\to CuS(s)\)

Answer:

A. \(Cu^{2+}(aq)+S^{2 - }(aq)\to CuS(s)\)