Question:

Cu

^{2+} CuI, I

^{-} I

_{2}So I assume I am supposed to write the two half equations and combine them?

My working:

Cu

^{2+} + I

^{-} + e

^{-} CuI (half equation 1)

2I

^{-} I

_{2} + 2e

^{-} (half equation 2)

Balance electrons and thus equation ( multiply moles of equation 1 by 2)

2Cu

^{2+} + 2I

^{-} + 2e

^{-} 2CuI

2I

^{-} I

_{2} + 2e

^{-}I proceeded to add the two half equations and cancelled out electrons

Answer:

2Cu

^{2+} + 4I

^{-} I

_{2} + 2CuI

I am wondering if this is the correct way of getting the overall equation and if this is the correct answer.