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Q.

Ecell0 for the reaction 4Al(s)+3O2+6H2O+4OH 4[Al(OH)4] is 2.73 V. If ΔGf0 for OHand H2O are -157 KJ/mole and -237.2 Kj/mole .Then ΔGf0 for [Al(OH)4]  is

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a

-890 kj/mole

b

-1303 kj/ mole 

c

-450 kj/mole

d

-1602 kj/mole

answer is B.

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Detailed Solution

ΔG0=nFEΔG0=ΔGproductsΔGreactants

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