electrolysis of sodium chloride solution Flashcards
1
Q
how many ions are present in sodium chloride solution
A
4
2
Q
what ions are present in sodium chloride solution
A
-sodium ions
-chlorine ions
-hydrogen ions
-hydroxide ions
3
Q
what is observed at both electrodes
A
bubbling
4
Q
what is formed at the anode
A
chlorine
5
Q
what is formed at the cathode and what is produced
A
-sodium and hydrogen
-sodium hydroxide is formed
6
Q
what is chlorines uses
A
-pesticides
-bleach
-cleaning products
7
Q
why is hydrogen formed at the cathode instead of sodium
A
because sodium is more reactive than hydrogen
8
Q
why is a smaller volume of chlorine gas produced than hydrogen
A
because chlorine is soluble in water
9
Q
as electrolysis continues more and more water is broken down- what does this cause?
A
the solution to become more and more concentrated
