What is the percent by mass of iodine needed to reduce the freezing point of benzene to 3.5^{\circ} {C} ? The freezing point and cryoscopic constant of pure benzene are 5.5^{\circ} {C} and 5.12 {K} \/ {m} respectively.

JEE Advanced 2020 Full Test 7 Paper 2

Question : 34 of 54

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What is the percent by mass of iodine needed to reduce the freezing point of benzene to 3.5∘C? The freezing point and cryoscopic constant of pure benzene are 5.5∘C and 5.12K∕m respectively.

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