REACTION OF CHLORINE WITH WATER Chlorine dissolves in

REACTION OF CHLORINE WITH WATER • Chlorine dissolves in water to form chlorine water which is pale green. • Chlorine water is composed of : hydrochloric acid : Chloric I acid Equation Hydrochloric acid +water chloric I acid + hydrochloric acid HCl (aq) +H 2 O(l) HOCl (aq) + HCl(aq)

Effects of chlorine water • When a blue litmus paper is dipped into chlorine water it turns red and immediately turns to colourless. • A red litmus paper will turn to colourless. • A coloured flower will turn to colourless • A green leaf will be decolourised.

Bleaching effects of chlorine water

Discussion • Chloric I acid in the chlorine water is unstable, it therefore reacts with coloured substances bleaching them. • The blue litmus turned to red because chlorine water is acidic. • The substances were decolourised because of the bleaching effect of chloric I acid in the chlorine water.

Equation HOCl (aq) + dye HCl (aq) + (dye + 0) colourles matter This is the bleaching effect of chlorine. It bleaches by oxidizing the dye.

conclution • Chlorine water is made up of -chloric I acid -hydrochloric acid • The chloric I acid is the component of chlorine water that has a bleaching effect and it bleaches by oxidation.

Assignment • Discuss the reaction of chlorine with alkali solutions