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Hydrogen

Question
CBSEENCH11006973
Wired Faculty App

Calculate the strength of 10 volume solution of hydrogen peroxide.

Solution

Hydrogen peroxide decomposes on heating as,
            2 straight H subscript 2 straight O subscript 2 left parenthesis straight l right parenthesis space space space space space space space rightwards arrow space space space space 2 straight H subscript 2 straight O left parenthesis straight l right parenthesis space plus space space straight O subscript 2 left parenthesis straight g right parenthesis 2 space straight x space 34 space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space STP space space space space space space space space space space space equals space 68 straight g space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space 22400 space mL space space space space space space space space space space space space space space space space space space
We know, 
     22400 mL of O2 at STP are produced from H2O2 = 68 g
therefore    10 ml of O2 at STP would be produced from H2O2 = fraction numerator 68 space cross times space 10 over denominator 22400 end fraction straight g space equals space 0.03036 space straight g
But 10 ml of oxygen at STP are produced from 1 ml of 10 volume of H2O2 solution.
Thus 1 ml of 10 volume at H2O2 solution contains  = 0.03036 g H2O2.

therefore   1000 ml of 10 volume of H2O2 solution
would contain = 0 .03036 x 1000 = 30.36g H2O2
therefore   Strength of 10 volume H2O2 = 30.36g L-1

Some More Questions From Hydrogen Chapter

Give laboratory Preparation of Dihydrogen ?

Name the substances in which hydrogen exhibits 0 and -1 oxidation states.

Name one isotope of hydrogen which has no neutron.

Which isotope of hydrogen is used as a tracer in organic reactions ?

Hydrogen is the lightest gas. Still its use in filling balloons has been discarded. Why?

Hydrogen forms both H+ ion and H- ion. Explain.

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