Complete and balance the equations on this page and the next.Credit will only be

Question

Complete and balance the equations on this page and the next.Credit will only be given for the work shown clearly.

(a)

Copper reacts withdilute nitric acid to form copper (II) nitrate and nitric oxide gasNO(g)

Explanation / Answer

        Cu +HNO3--> Cu(NO3)2 + NO Oxidize: Cu -->Cu2+ + 2e- Reduction: 3e- +4H++NO3- --> NO + 2H2O balance:        3Cu +2NO3- + 8H+ --> 2NO +3Cu2+ + 4H2O =>   3Cu + 8HNO3--> 2NO +3Cu(NO3)2+ 4H2O    Oxidization is to lose electron and Reductionis to gain electron. Cu has 0 charge and the end is Cu2+ means itloses 2e=> oxidized    N in HNO3 is +5 and in NO is +2=> it gains 3e=>reduction.

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