Question

the equivalent weight of mn+2 and cu+2are respectively​

Answer 1

Answer:

Explanation:

or CuS, the oxidation number  of S changes from -2 to +4.

Total change in the oxidation number is +6.

Equivalent weight is the ratio of molar mass to the change in the oxidation number.

∴ The equivalent weight of CuS is  

6

M  

1

​  

 

​  

 

For Cu  

2

​  

S the oxidation number  of S changes from -2 to +4.

The oxidation number of Cu changes from +1 to +2.

Total change in the oxidation number is +6+2(+1)=+8 .

∴ The equivalent weight of Cu  

2

​  

S is  

8

M  

2

​  

 

​  

 

For KMnO  

4

​  

 , the oxidation number of Mn changes from +7 to +2.

The change in the oxidation number is +5.

∴ The equivalent weight of KMnO  

4

​  

  is  

5

M  

3

​  

 

​