MHT CET Chemistry question
Element A (atomic mass 112) and element B (atomic mass 27) form chlorides. Solutions of these chlorides are electrolysed separately and it is found that when the same quantity of electricity is passed 5.6 g of A was deposited while only 0.9 g of B was deposited. If the valency of B is 3, then the valency of A is
Answer: (A)
Solution
= 27/3 = 9; / = / gives = 5.6 × 9/0.9 = 56, so valency = 112/56 = 2; 3 and 4 give
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