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Balance the following equation for reactions occurring in basic solution: Zn + N

ID: 967638 • Letter: B

Question

Balance the following equation for reactions occurring in basic solution:

Zn + NO3- Zn(OH)42- + NH3

4 Zn + 7 OH- + NO3- 4 Zn(OH)42- + NH3 + 2 O2

2 Zn + 7 OH- + 2 NO3- + 6 H2O 2 Zn(OH)42- + 2 NH3

4 Zn + 11 H2 + 2 NO3- 4 Zn(OH)42- + 2 NH3

4 Zn + 7 OH- + NO3- + 6 H2O 4 Zn(OH)42- + NH3

NO3-

Zn + 7 OH- + NO3- + 6 H2O Zn(OH)42- + NH3

a.

4 Zn + 7 OH- + NO3- 4 Zn(OH)42- + NH3 + 2 O2

b.

2 Zn + 7 OH- + 2 NO3- + 6 H2O 2 Zn(OH)42- + 2 NH3

c.

4 Zn + 11 H2 + 2 NO3- 4 Zn(OH)42- + 2 NH3

d.

4 Zn + 7 OH- + NO3- + 6 H2O 4 Zn(OH)42- + NH3

NO3-

e.

Zn + 7 OH- + NO3- + 6 H2O Zn(OH)42- + NH3

Explanation / Answer

(Zn + 4 OH- -----------> Zn(OH)42- + 2e ) x 4

NO3- + 9 H2O + 8e ----------> 3 H2O + NH3 + 9 OH-

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4 Zn + 7 OH- + NO3- + 6 H2O ---------> 4 Zn(OH)42- + NH3

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