11@cool rocks
u mean (d)?
I am really weak in chemistry ,so don't get upset abt the level of ques.
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7 Answers
1hello
the first question
Cu2++2e--->Cu
Ecell=E0cell - .0592log1[Cu2+]
now replace [Cu2+] by [Cu2+]10
E'cell=E0cell - .0592log10[Cu2+]
subtract both
hence decrease by .0592=29.5 mV answer is C
12nd question
at equilibrium ΔG=0 so is Ecell
now write nernst equation and solve the question
13.
we have ΔG=-2.303RTlogK
also ΔG=-nFE
equating the above, 2.303 x 8.314(J/molK) x 298(k) x log(2.69x1012) = 2 x 96500(F\mol) x E
so you can calculate E
1the above working should give the correct ans. i havent calculated