Calculate the strength


Calculate the strength of 5 volume H2O2 solution.


The molar mass of H2O2 is 34gm. According to this reaction, 2 moles of peroxide is involved, so mass becomes 68gm.

we know that 1mole of any gas occupies a volume of 22.4L at NTP.

Now, 5 volume H2O2 solution means that 1 L of 5 volume H2O2 on decomposition gives 5L of O2 at NTP.

5L of O2 at NTP, we need (68/22.4*5 ) gm H2O2

= 15.179gm.

Strength of H2O2 in 5 volumes of it is 15.179gm/L

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