13. Balance the following equation for a reaction that occurs in basic medium in

Question

13. Balance the following equation for a reaction that occurs in basic medium in a nickel-cadmium alkaline battery.

H2O + Cd + Ni2O3 --> Cd(OH)2 + Ni(OH)2

14. Balance the following formula unit equation.

H2SO4 + HI --> ? I2 + SO2 + H2O

15. Balance the following formula unit equation.

HNO3 + ZnS --> S + NO + Zn(NO3)2 + H2O

16. Balance the following formula unit equation for a reaction in basic solution.

KMnO4 + H2O + Cu --> Cu(OH)2 + MnO2 + KOH

17. Balance the following equation for a reaction in acidic solution.

MnO4- + H+ + Br- --> Mn2+ + Br2 + H2O            

please show all steps and reasoning behind them. Thank you

Explanation / Answer

13) 3H2O + Cd + Ni2O3 --> Cd(OH)2 + 2Ni(OH)2

14) H2SO4 + 2HI --> I2 + SO2 + 2H2O

16)KMnO4 + 2H2O + Cu --> 1.5Cu(OH)2 + MnO2 + KOH

17) MnO4- + 8H+ + 2Br- --> Mn2+ + Br2 + 4H2O

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