EcellΘ for some half cell reactions are given below. On the basis of these mark the correct answer. (1) H+(aq)+e-→12H2(g);EcellΘ=0.00V( ii) 2H2O(l)→O2(g)+4H+(aq)+4e-;EcellΘ=1.23V (iii) 2SO42-(aq)→S2O82-(aq)+2e-;Ecell Θ=1.96 V
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a
In dilute sulphuric acid acid solution, hydrogen ion will be reduced at cathode
b
In concentrated sulphuric acid solution, water will be oxidized at anode
c
In dilute sulphuric acid solution, water will be oxidized at anode
d
in dilute sulphuric acid solution, SO42−ion will be oxidized to tetrathionate ion at anode.
answer is A.
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Detailed Solution
greater oxidation potential greater the tendency of undergoing oxidationgreater reduction potential greater the tendency of undergoing reduction