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Question

100 mL of 0.2 M KAl(OH)2CO3 solution is completely neutralized by a standard solution of M4 H2C2O4. Which of the following is/are wrong?
  1. The volume of H2C2O4 required is 160 mL.
  2. The volume of H2C2O4 required is 80 mL.
  3. The normality of KAl(OH)2CO3 is 0.4 N.
  4. It is a redox reaction.

A
The normality of KAl(OH)2CO3 is 0.4 N.
B
It is a redox reaction.
C
The volume of H2C2O4 required is 160 mL.
D
The volume of H2C2O4 required is 80 mL.
Solution
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The correct options are
B The volume of H2C2O4 required is 80 mL.
C The normality of KAl(OH)2CO3 is 0.4 N.
D It is a redox reaction.
The reaction between KAl(OH)2CO3 and H2C2O4 is an acid -base titration.
Milliequivalents of KAl(OH)2CO3 = Milliequivalents of H2C2O4
100 ×0.2×4=14×2×V
VH2C2O4=160 mL
NKAl(OH)2CO3=0.2×4=0.8 N

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