Q5Multiple choice
E Cell for some half cell reactions are given below. On the basis of these mark the correct answer. (2) + 1 V (a) H (aq.) + e– → H (g) ; E Cell = 0.00V 2 2 + V (b) 2H2O (l) → O2 (g) + 4H (aq.) + 4e– ; E Cell = 1.23V 2– 2– V (c) 2SO4 (aq.) → S2O8 (aq.) + 2e– ; E Cell = 1.96 V
- (i)In dilute sulphuric acid solution, hydrogen will be reduced at cathode.
- (ii)In concentrated sulphuric acid solution, water will be oxidised at anode. 2–
- (iii)In dilute sulphuric acid solution, SO 4 ion will be oxidised to tetrathionate ion at anode.
- (iv)In dilute sulphuric acid solution, water will be oxidised at anode.
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(i) In dilute sulphuric acid solution, hydrogen will be reduced at cathode.
(iv) In dilute sulphuric acid solution, water will be oxidised at anode.