Uses of chlorine

Question 1

What are the products of chlorine + water

Answer 1

chloric acid - HClO

hydrochloric acid - HCl

Question 2

What happens to the oxidation state in the reaction?

Answer 2

the chlorine atom in HClO is increases to +1

the chlroine atom in HCl decreases to -1

Question 3

What is a dispropotionation reaction?>

Answer 3

a redox reaction,

where the oxidation state of some atoms of the same elemnt increase and others decrease

Question 4

WHat is the colour of aqueous chlorine?

Answer 4

pale green turns to colourless

Question 5

When is the reaction with water used? What is the problem with it

Answer 5

chloric acid isused as a oxidsin g agent to and kill bacteria by oxidation

also used as bleach

in pools it needs to be frequently added as it is rapidly lost

Question 6

What are the products of chlorine reaction with sodium hydroxide?

what are the oxidation states of Cl

Answer 6

Cl₂ (g) + 2NaOH (aq) → NaClO (aq) + NaCl (aq) + H₂O (l)

NaClO - Cl is +1

NaCl - Cl is -1

Question 7

What are the conditions for the rection with sodium hydroxide?

Answer 7

cold, dilute

Question 8

What is the function of sodium chlorate (I)?

Answer 8

oxidising agent and the active ingredient in household bleach

Question 9

What type of reaction is it sodium hydroxide?

Answer 9

also a dispropotionation reaction

Question 10

why would a pool be kept at a pH above 7

Answer 10

• hydroxides react with acid
• eqm moves to right