Salts of A (atomic mass 15), B (atomic mass 27) and C (atomic mass 48) were electrolysed using same amount of charge. It was found that when 4.5 g of A was deposited, the masses of B and C deposited were 2.7 g and 9.6 g. The valencies of A, B and C were respectively

Question

Salts of A (atomic mass 15), B (atomic mass 27) and C (atomic mass 48) were electrolysed using same amount of charge. It was found that when 4.5 g of A was deposited, the masses of B and C deposited were 2.7 g and 9.6 g. The valencies of A, B and C were respectively, 1, 3 and 2, 3, 1 and 3, 3, 1 and 2, 2, 3 and 2

MARKS App · Accepted Answer

According to Faraday's second law Mass of A Equivalent mass of A = Mass of B Equivalent mass of B = Mass of C Equivalent mass of C 4.5 15 / n 1 = 2.7 27 / n 2 = 9.6 48 / n 3 n 1 : n 2 : n 3 0.3 : 0.1 : 0.2 3 : 1 : 2 .

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