Chemistry
During the electrolysis of acidulated water using platinum electrodes:
(a) State the volume ratio of the products formed at electrodes.
(b) Is it an example of catalysis?
(c) Write the reaction occurring at the anode
Answer
(a) Hydrogen and oxygen are obtained in the volume ratio 2 : 1 (H2 : O2).
(b) Water in pure state consists almost entirely of molecules. It is a polar covalent compound and can form ions when traces of dilute sulphuric acid is added. As dilute sulphuric acid catalyses this ionisation, hence this electrolysis of acidified water is considered as an example of catalysis.
(c) Reaction at anode:
4OH- - 4e- ⟶ 4OH
4OH ⟶ 2H2O + O2
Related Questions
Write a balanced reaction where sulphuric acid shows the following properties:
(a) Oxidising agent
(b) Non Volatile Acid
(c) Dehydrating agent
Choose the answer which fits the description from the list given below:
[CaO, CO2, NaOH, Fe(OH)2, CO, ZnO]
(a) A base insoluble in water.
(b) An oxide which is yellow when hot and white when cold.
(c) A neutral oxide
Name the catalyst required for the following processes:
(a) Contact process
(b) Ostwald process
(c) Haber process
An organic compound contains: H = 6.32 %, N = 17.76%. In the vapour state, this compound is 39.5 times as heavy as the same volume of hydrogen.
(a) Find the molecular formula of the compound. (At wt: H = 1 N = 14 )
(b) Calculate the number of hydrogen atoms in one mole of this compound.