Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 10 Answered

In electrolysis of water ,the water coloum at anode looks more higher in spite of having less volume of oxygen gas than cathode having double volume of hydrogen gas ,Is there any reason or it is an error of NCERT text book
Asked by saradamahapatra9999 | 19 Apr, 2020, 02:35: PM
answered-by-expert Expert Answer

 Electrolysis of Acidified Water

Electrolyte: Acidified water

Electrodes:

Anode: Platinum

Cathode: Platinum

Ionisation of acidified water: H2O  → H+ + OH

                                              H2SO4  → 2H+ + SO42–

Ions present: H+, SO42–, OH

Electrode reactions: 

Reaction at the cathode: H+ + e → H

                                         H + H → H2 (hydrogen molecule)

Reaction at the anode: OH − e  → OH × 4

OH– ion discharge in preference to SO42–

                  4OH → 2H2O + O2 (oxygen molecule) 

At the cathode, Hydrogen gas is evolved and at the anode, oxygen gas is liberated.

 

The water molecule has two atoms of hydrogen and one atom of oxygen, that means in the no. of hydrogens are double than that of oxygen,

hence the amount of hydrogen gas evolved collected in one of the test tubes doubles the amount in the other gas i.e., oxygen.

If the information given in the book you mentioned is not matching with above information then it may considered as a print mistake.

Answered by Ramandeep | 19 Apr, 2020, 07:56: PM
CBSE 10 - Chemistry
Asked by 09.10bjanvhijadhav | 02 Mar, 2024, 08:22: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Chemistry
Asked by prassanna.j | 01 Mar, 2024, 11:59: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Chemistry
Asked by nehashekh291 | 02 Jan, 2023, 07:26: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Chemistry
Asked by satulurivictor | 17 Dec, 2022, 08:51: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Chemistry
Asked by Shadm4242 | 20 Aug, 2022, 12:35: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Chemistry
Asked by shyjukadakkavur | 12 Jun, 2022, 08:38: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Chemistry
Asked by krrishsahu371 | 01 Dec, 2021, 09:22: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Chemistry
Asked by alintareji | 22 Aug, 2021, 08:11: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
Get Latest Study Material for Academic year 24-25 Click here
×