Redox Reactions And Electrochemistry Ques 576

Question: When electric current is passed through acidified water, 112 mL of hydrogen gas at STP collected at the cathode in 965 seconds. The current passed in amperes is

Options:

A) 1.0

B) 0.5

C) 0.1

D) 2.0

Show Answer

Answer:

Correct Answer: A

Solution:

[a] 2H++2eH2 EH(Eq.wt)=22=1 1g=224002=11200,mL(STP) Totalchargepassed=96500×11211200=965 Q=It=965 I=965965=1amp.



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