Electrochemistry - Result Question 17
####18. On electrolysis of dil. sulphuric acid using Platinum $(Pt)$ electrode, the product obtained at anode will be
(a) Oxygen gas
(b) $H_2 S$ gas
(c) $SO_2$ gas
(d) Hydrogen gas
[2020]
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Solution:
- (a) During the electrolysis of dil. sulphuric acid using Pt electrodes following reaction occurs.
At cathode : $4 H^{+}(aq)+4 e^{-} \longrightarrow 2 H_2(g)$
At anode : $2 H_2 O(l) \longrightarrow O_2(g)+4 H^{+}(aq)+4 e^{-}$
