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Q.

Electrolysis of aq. K2SO4 using inert electrodes is carried out by passing 50 amperes for 1930 seconds. Volume of the gas obtained at cathode(at STP) is

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a

22.4 l

b

11.2 l

c

44.8 l

d

5.6 l

answer is B.

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Detailed Solution

SRP value of EH+(aq)/12H2(1 atm), Pt(s)o>EK+(aq)/K(s)0At cathode H2 gas is liberated∴WH2=EitF WH2=1×50×193096500 WH2=1 g 2 g of hydrogen....22.4 l at STP 1 g......................11.2 l at STP

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Electrolysis of aq. K2SO4 using inert electrodes is carried out by passing 50 amperes for 1930 seconds. Volume of the gas obtained at cathode(at STP) is