Question

Complete and balance the following equation: BrO3−(aq)+N2H4(aq)→Br2(l)+N2(g)

Answer 1

BrO3- + 6H+ + 6e-= Br- + 3 H2O 
N2H4 = N2 + 4 H+ + 4e- 
2 BrO3- + 3 N2H4 = 2 Br- + 3 N2 + 6 H2O