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Question

The concentration of H2O2 in a solution containing 34 gm in 500ml is given in List I and their corresponding values are given in List II. Then match List I with List II.


List I List II
A) Molarity
1) 68
B) Normality
2) 22.4
C) % w/v
3) 4
D) Volume strength
4) 2

5) 10

A
(A)-5, (B)-3, (C)-1, (D)-2
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B
(A)-4, (B)-3, (C)-1, (D)-2
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C
(A)-3, (B)-4, (C)-1, (D)-2
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D
(A)-1, (B)-2, (C)-3, (D)-4
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Solution

The correct option is D (A)-4, (B)-3, (C)-1, (D)-2
(A) The molar mass of hydrogen peroxide is 34 g/mol.
The molarity of 34 g of hydrogen peroxide in 500 ml is 34g34g/mol×1000mL/L500mL=2 M.

(B) The normality of hydrogen peroxide is twice its molarity. It is 2×2=4 N.

(C) Percent w/v of hydrogen peroxide solution is 34g×1000mL/L500mL=68 %

(D) Volume strength =11.2× molarity =11.2×2=22.4

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