What is the percentage strengthw/v of 22.7 V H2O2 solution at Stp
a.6.8%
b.3.4%
c. 34%
d. 68%
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1 thought on “<br />What is the percentage strengthw/v of 22.7 V H2O2 solution at Stp <br />a.6.8%<br />b.3.4% <br />c. 34%<br />d. 68%<br />​”

1. Answer:

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   Explanation:

   Correct option is

   B

   (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

   34g/mol

   34g

   ×

   500mL

   1000mL/L

   =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

   500mL

   34g×1000mL/L

   =68 %

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

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