See image — AITS & Test Series Chemistry Question

💡 Solution & Explanation

Let us assume x mL of O3 in given sample (25 mL) of ozonised oxygen. Now O3 present in the sample reacts with KI to liberate I2 according to following reaction AITS-PT-III-PCM(Sol.)-JEE(Main)/2021 Ltd., FIITJEE House, 29-A, Kalu Sarai, Sarvapriya Vihar, New Delhi -110016, Ph 46106000, 26569493, Fax 26513942 website: www.fiitjee.com 11 3 2 2 2 O 2KI H O O I 2KOH      … (1) The I2 liberated in above reaction [Eq. (1)] further reacts with Na2S2O3 according to the following reaction 2 4 2 3 2 2 6 2