Q.

Beryllium occurs naturally in the form of beryl. The metal is produced from its ore by electrolysis after the ore has been converted to the oxide and then to the chloride. How many grams of Be(s) is deposited from a BeCl2 solution by a current of 5.0 A that flows for 1.0 h? (Atomic weight : Be = 9)

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a

0.840

b

1.68

c

1.42

d

1.08

answer is D.

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Detailed Solution

w=92×5×1×60×6096,500≈0.840g
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Beryllium occurs naturally in the form of beryl. The metal is produced from its ore by electrolysis after the ore has been converted to the oxide and then to the chloride. How many grams of Be(s) is deposited from a BeCl2 solution by a current of 5.0 A that flows for 1.0 h? (Atomic weight : Be = 9)