Balance the following equation in acidic solution using the lowest possible inte

Question

Balance the following equation in acidic solution using the lowest possible integers and give the coefficient of H+.
Cl2(aq) + S2O32- (aq) ? Cl-(aq) + SO42-(aq)

A. 10

B. 8

C. 1

D. 3

E. 2

- - - - -- - - -

Balance the following equation in acidic solution using the lowest possible integers and give the coefficient of water.
MnO4-(aq) + H2SO3(aq) ? Mn2+(aq) + HSO4-(aq)

1

2

3

6

5

- - - - - -

CrO42-(aq) +Cu(s) ? Cr(OH)3(s) + Cu(OH)2(s)

What is the coefficient of water?

1

2

6

8

4

1

2

3

6

5

Explanation / Answer

1.
4 Cl2 + S2O3 2- + 5 H2O = 8 Cl- + 2 SO42- + 10 H+

a.10

2.
2 (MnO4)-1 + 5 H2SO3 + 1 H+--> 2 Mn2+) + 5 (HSO4)-1 + 3 H2O

3

3.
2CrO42-(aq) + 3Cu(s) + 8H2O ---> 2Cr(OH)3(s) + 3Cu(OH)2(s) + 4OH-

8

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