Complete and balance the equation for this reaction in acidic solution

acidic-solution

#1

Complete and balance the equation for this reaction in acidic solution. ZnS + NO3^- -> Zn^2+ + S + NO Which element was Oxidized ? Which element was reduced ? Which species was the oxidizing agent ? Which species was the reducing agent?

Answer:

3ZnS + 2NO3- + 8H- --> 3Zn2+ + 3S + 2NO + 4H2O

Oxidized: S

Reduced: N

Oxidizing Agent: NO3-

Reducing Agent: ZnS