Question

DOLLARS ULUD
AI Q. 12. In the electrolysis of water:
(i) Name the gas collected at the cathode and anode
respectively.
[SQP 2018]
(ii) Why the volume of one gas, collected at one
electrode is double than that at the other ? Name
this gas.
[DDE, 2017]
(iii) How will you test the evolved gases ?
U[Board Term-I Set-37, 2012)​

Answer 1

Answer:

1)cathode =O2

Anode=H2.

2)As in molecular formula of water H =2 atoms

O=1 Atom. Therefore volume of H is double than O2.

.3)brings burning candle towards it

Pop up sound =hydrogen.

Burn vigorously =oxygen