A cold aqueous solution of sodium chloride is electrolyze...
A cold aqueous solution of sodium chloride is electrolyzed using a graphite anode and an iron cathode. In the course of the electrolysis the electrolyte is continuously stirred. The liquid left after electrolysis will therefore consist of?
sodium hydroxide solution
chlorine water
pure water
sodium hypochlorite solution
hydrochloric acid solution
Correct answer is A
we take cold aqueous to be concentrated solution of NaCl.
NaCl → Na++Cl−
H2O→H++OH−
H ion will be preferably discharged at the cathode while Cl ion will be discharged at the anode(due to high concentration)
Thus, NaOH is left in the solution.
What is the sum of the oxidation numbers in a neutral compound? ...
What is the chemical symbol for Lanthanum? ...
The gas responsible for most of the fatal explosions in coal mines is...
Lead and tin are the components of ...
How many electrons are removed from Cr2- when it is oxidized to CrO42-? ...
Metals can be stretched into wires because they are ...