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The Normality of 30 volume H2O2 is a)2.678 N b)5.357 N c)8.034 N d)6.685 N

The Normality of 30 volume H2O2 is
a)2.678 N
b)5.357 N
c)8.034 N
d)6.685 N

Grade:11

6 Answers

Siddharth Khuttan
39 Points
7 years ago
VOLUME STRENGTH= Normality x 5.6 OR Vol .Str.= MOLARITY x n-factor of H202 x 5.6 =MOLARITY x 11.2
 therefore
 
30= Nx 5.6
 
Ans: N=5.357
 
 
mgayathri
42 Points
7 years ago
why should we multiply with 5.6 to get the volume strength.
is it a formula.can you please explain what is meant n factor
Siddharth Khuttan
39 Points
7 years ago
n-factor basically tells the basicity of acid or acidity of base
For eg:
Monobasic acids: HCl,HNO3
They give only 1 H+ ion. Therefore its n-factor is 1/basicity=1
Dibasic acids like H2SO4 have n-factor =2 /basicity=2
Tribasic like H3PO4 have n-factor=3/basicity=3
 
Also, n-factor tells about change in oxidation state.
For eg:
KMnO4---(ACIDIC MEDIUM)---> Mn2+
oxidation state(Mn=7)              (os=2)
n-factor= |2-7|=5
 
Simlarily the reactions of KMnO4 in basic and neutral medium are
 
KMnO4------(BASIC)-----> K2MnO4
here n factor is 1
 
KMnO4------(NEUTRAL)---->MnO2
here nf=3
 
Talking about the VS of H2O2, it is a derived shortcut to make your work faster.
It has been derived from  Mole Concept.       
Siddharth Khuttan
39 Points
7 years ago
n factor also refers to the charge on cations or anions of a salt in a balacnced chemical equation
 
For eg: 
K2SO4----> 2K+   +SO42-
here nf=2
 
 
Krish Gupta
askIITians Faculty 82 Points
3 years ago
The formula based questions are too easy to follow, just apply the formula and you are good to go. 
VOLUME STRENGTH= Normality x 5.6 OR Vol .Str.= MOLARITY x n-factor of H202 x 5.6 =MOLARITY x 11.2
 therefore
 
30= Nx 5.6
 
Ans: N=5.357
Krish Gupta
askIITians Faculty 82 Points
3 years ago
 
n-factor basically tells the basicity of acid or acidity of base
For eg:
Monobasic acids: HCl,HNO3
They give only 1 H+ ion. Therefore its n-factor is 1/basicity=1
Dibasic acids like H2SO4 have n-factor =2 /basicity=2
Tribasic like H3PO4 have n-factor=3/basicity=3
 
Also, n-factor tells about change in oxidation state.
For eg:
KMnO4---(ACIDIC MEDIUM)---> Mn2+
oxidation state(Mn=7)              (os=2)
n-factor= |2-7|=5
 
Simlarily the reactions of KMnO4 in basic and neutral medium are
 
KMnO4------(BASIC)-----> K2MnO4
here n factor is 1
 
KMnO4------(NEUTRAL)---->MnO2
here nf=3
 
Talking about the VS of H2O2, it is a derived shortcut to make your work faster.
It has been derived from  Mole Concept.       

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