Element A (atomic mass 112) and element B (atomic mass 27) form chlorides . Solutoins of these chlorides are electrolysed separately and it is found that the same quantity of electricity is passed 5.6 gm of A deposited while only 0.9 gm of B was deposited . if the valency of B is 3 , the valency of A is

Element A (atomic mass 112) and element B (atomic mass 27) form chlori

1.	Element A (atomic mass 112) and element B (atomic mass 27) form chlorides . Solutoins of these chlorides are electrolysed separately and it is found that the same quantity of electricity is passed 5.6 gm of A deposited while only 0.9 gm of B was deposited . if the valency of B is 3 , the valency of A is
Answer» 2 3 4 `-2` SOLUTION :Equivalent mass of A = `("ATOMIC mass")/("VALENCY") = (112)/(X)` Equivalent mass of B = `("Atomic mass")/("valency") = (27)/(3) = 9` `("Mass of A")/("Mass of B") = ("Equivalent mass of A")/("Equivalent mass of B") = (5.6)/(0.9)` `THEREFORE (112//x)/(9) = (5.6)/(0.9)` `therefore x = (112 xx 0.9)/(9 xx 5.6) = 2` Valency of A = 2