ElectrochemistryMedium
Question
Two platinum electrodes were immersed in a solution of CuSO4 and electric current was passed through the solution. After some time, it was found that colour of CuSO4 disappeared with the evolution of gas at the electrode. The colourless solution contains
Options
A.platinum sulphate
B.copper sulphate
C.copper hydroxide
D.sulphuric acid
Solution
At cathode: $Cu^{2 +}(aq) + 2e^{-} \rightarrow Cu(s)$
At anode: $2H_{2}O(l) \rightarrow O_{2}(g) + 4H^{+}(aq) + 4e^{-}$
Hence, solution becomes rich in H2SO4.
Create a free account to view solution
View Solution FreeMore Electrochemistry Questions
A current is passed through 500 mL of an aqueous solution of CaI2. After sometime, it is observed that 50 millimoles of ...The standard potential of the reaction H2O + e- → H2 + OH- at 298 K by using Kw (H2O) = 10-14, is :...The standard electrode potential ( $E^{\circ}$ ) for the half-cell reaction ${Fe}^{3 +} + e^{-} \rightarrow {Fe}^{2 +}$ ...Emf for the cell reaction Zn|Zn2+(0.001M)||Zn2+(0.1M)|Zn...A hydrogen electrode is immersed in a solution with pH = 0 (HCl). By how much will the potential (reduction) change if a...