MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Physical ChemistryElectrochemistryPrevious Year Questions
How many coulombs are required to deposit 50 g of aluminium when the electrode reaction is Al 3e Al -> [RPMT 2010]
A.536111 C✓ Correct
B.536.111 C
C.96500 C
D.38600 C
Explanation
3 Al 3e Al -> 1 mole of Al requires 3 moles of electrons or 3 x 96500 C Hence, 50 g of Al require = 3 × 96500퐶× 50 27 ≃536111퐶
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