CUET Questions — Chemistry (Electrochemistry)

Q27. The electrochemical cells Zn|Zn2+||Cu2+|Cu and Fe|Fe2+||Cu2+| Cu are connected in series, What will be the net emf of the cell at 25°C? Given: E° of Zn2+|Zn = -0.76V E° of Cu2+|Cu = +0.34 V E° of

Q19. Reaction occurring at cathode is HgO + H2O + 2e- → Hg (l) + 2 OH- Above reaction is found in: (a) Leclanche cell (b) Mercury cell (c) Fuel cell (d) Ni-Cd-cell

Q37. A solution of CuSO4 is electrolysed for 10 minutes using a current of 1.5 amperes. (1 mol of Cu = 63 g). How much copper is deposited at cathode. 1F = 96487 Cmol-1 (a) 0.2938 g (b) 2.938 g (c) 29