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18/09/2020 11:53 am
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The strengths of 5.6 volume hydrogen peroxide (of density 1 g/mL) in terms of mass percentage and molarity (M) respectively are:
(Take molar mass of hydrogen peroxide as 34 g/mol)
(1) 1.7 and 0.5
(2) 0.85 and 0.5
(3) 1.7 and 0.25
(4) 0.85 and 0.25
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18/09/2020 11:56 am
(1) 1.7 and 0.5
Explanation:
For H2O2
Molarity = Volume strength/11.2 = 5.6/11.2 = 0.5 M
Molarity = % w/w x 10 x d/GMM
%(w/w) = 0.5 x 34/10 = 1.7