A certain current liberated 1.008 g of hydrogen in 2 hours. How many grams of copper can be deposited by the same current flowing for the same time in CuSO4 solution. (at mass of Cu = 63.5)
Answers
Given : A certain current liberated 1.008 g of hydrogen in 2 hours.
To find : The amount of copper can be deposited by the same current flowing for the same time in CuSO₄ solution.
solution : equivalents of H₂ = equivalent of Cu
⇒ weight of H₂/equivalent weight of H₂ = weight of Cu/equivalent weight of Cu
⇒1.008/1 = weight of Cu/(63.5/2)
⇒1.008 = weight of Cu/(31.75)
⇒weight of Cu = 1.008 × 31.75 = 32.004 g
Therefore 32.004 g of copper can be deposited by the same current flowing for the same time in CuSO₄ solution.
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