pBlock ElementsII 2 Question 19
19. Bromine can be liberated from potassium bromide solution by the action of
(1987, 1M)
(a) iodine solution
(b) chlorine water
(c) sodium chloride
(d) potassium iodide
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Solution:
- Among halogens, oxidising power decreases from top to bottom. Hence, the upper halogen oxidises lower halides from aqueous solution. Chlorine will oxidise bromide into bromine.
