A certain sample of hydrogen peroxide is 1.5M solution. It is to be labelled as X volumes. Calculate the value of X.
(A) 16.8 L
(B) 11.8 L
(C) 5.3 L
(D) 6.2 L
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A. Molarity=Mass of solutionMol. mass×VL
or Mass of H2O2 per litre=1.5×34=51 g.
2H2O2 → 2H2O+O2 68 g 22.4L
51 g of H2O2 gives O2 at STP=22.4×5168=16.8
Thus, 1L of H2O2 which contains 51 g of H2O2 produce O2 at STP=16.8 L.
Hence, value of X is =16.8 L
or The given sample is 16.8 volume H2O2.