Question

9.
cm3
800 cmº of ozonised oxygen at NTP were passed through potassium iodide solution.
The iodine liberated required 200 cm of 0-1 N sodium thiosulphate for titration.
Calculate the percent volume of ozone in the mixture.
O = 16, K = 39, Na = 23, S = 32, I = 127
(1) 14%
(2) 56%
(3) 28%
(4) None of these
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Answer 1

Answer:

(4)

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