Salts of A (atomic mass 15), B (atomic mass 27) and C (atomic mass 48) were…
CHEMISTRY · Single correct · AP · Chemistry · Thermodynamics and Electrochemistry · Thermodynamics and Electrochemistry
Problem
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 mass of B and C deposited were 2.7 g and 9.6 g. The valencies of A, B and C respectively.
(a) 1, 3 and 2
(b) 3, 1 and 3
(c) 2, 6 and 3
(d) 3, 1 and 2