Current strength of 0.2A carry out electrolysis of aqueous potassium chloride for 10 minutes.The volume of solution is 125 ml and it is assumed that during the electrolysis does not change.What is the plural concentration of OH- ions at the end of the...?
...end of the electrolysis?Calculate the volume of hydrogen and chlorine which develop on the electrodes at 1 bar and 20 degrees Celsius.
...end of the electrolysis?Calculate the volume of hydrogen and chlorine which develop on the electrodes at 1 bar and 20 degrees Celsius.
2 Answers
The quantity of electricity passed
We know 1 faraday electricity produces 1 gm equivalent of different substance on electrolysis
So strength of
so 1000ml contains
hydrogen produced
Chlorine produced
Hence same volume of each gas will be) produced. under same condition of temperature and pressure
It canbe calculated as follows
The volumes of
Explanation:
The half-reactions are:
Oxidation:
Reduction:
The quantity of charge transferred
The quantity of charge (
#color(blue)(|bar(ul(color(white)(a/a) Q =It color(white)(a/a)|)))" "#
where
One faraday of electricity produces 1 mol of electrons.
#color(blue)(|bar(ul(color(white)(a/a)"1 F" = "96 485 C" = "1 mol electrons"color(white)(a/a)|)))" "#
∴
Volume of
From the half-reactions,
From the Ideal Gas Law,
#color(blue)(|bar(ul(color(white)(a/a)V = (nRT)/Pcolor(white)(a/a)|)))" "#
Volume of
From the half-reactions,
This is the same value as for hydrogen, so
Concentration of
#color(blue)(|bar(ul(color(white)(a/a)"Molarity" = "moles"/"litres" color(white)(a/a)|)))" "#
∴