Using the half-reaction method, balance the following formula unit equation for a reaction in basic solution. KMnO 4 + H 2 0 = Cu(OH) 2 + MnO 2 + KOH Solution Given reaction is KMnO 4 + H 2 O -------> Cu(OH) 2 + MnO 2 + KOH H balance: Multiply Cu(OH) 2 with 1.5 and H 2 O with 2 KMnO 4 + 2H 2 O -------> 1.5 Cu(OH) 2 + MnO 2 + KOH Cu balance: add 1.5Cu on reatants side KMnO 4 + H 2 O+ 1.5Cu -------> Cu(OH) 2 + MnO 2 + KOH The required equation is KMnO 4 + 2H 2 0 + 1.5Cu ------->1.5 Cu(OH) 2 + MnO 2 + KOH .

1. Using the half-reaction method, balance the following formula unit equation for a reaction in
basic solution.
KMnO 4 + H 2 0 = Cu(OH) 2 + MnO 2 + KOH
Solution
Given reaction is KMnO 4 + H 2 O -------> Cu(OH) 2 + MnO 2 + KOH
H balance: Multiply Cu(OH) 2 with 1.5 and H 2 O with 2
KMnO 4 + 2H 2 O -------> 1.5 Cu(OH) 2 + MnO 2 + KOH
Cu balance: add 1.5Cu on reatants side
KMnO 4 + H 2 O+ 1.5Cu -------> Cu(OH) 2 + MnO 2 + KOH
The required equation is
KMnO 4 + 2H 2 0 + 1.5Cu ------->1.5 Cu(OH) 2 + MnO 2 + KOH