Question

a certain current liberates 0.5 g of hydrogen in 2 hours. how many grams of oxygen can be liberated by the same current in same time?

Answer 1

Weight of Oxygen/weight of hydrogen= Equivalent weight of oxygen/equi. weight of hydrogen--->(1)

Equi. weight of an atom=molar mass/ valency

∴ Equi. weight of O=16/2=8

Equi. weight of H=1/1=1

Putting these in eq-1, we get

Weight of O=8x0.5/1=4g

∴Weight of oxygen liberated is 4g

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