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JEE Main 202125 FebruaryMorning Shift
Exam
JEE Main
Year
2021
Date
25 February
Shift
Morning Shift
Subject
Chemistry
Chapter
Solutions

JEE Main 2021 · 25 February · Morning Shift · Chemistry · Solutions

1 molal aqueous solution of an electrolyte A _ 2 B _ 3 is 60 %...

1molalaqueoussolutionofanelectrolytemolal aqueous solution of an electrolyte{A}_{2}{B}_{3}isis60 %ionised.Theboilingpointofthesolutionationised. The boiling point of the solution at1atmis _____K.(Rounded−offtothenearestinteger)[Given. (Rounded-off to the nearest integer) [Given{K}_{b}for(H2O)=0.52Kkgmol−1for \left({H}_{2}O\right) = 0 . 52Kkg{mol}^{- 1}]

Correct answer

0

Step-by-step solution

{\Delta T}_{b} = {iK}_{b}m</p><p></p><p>= \left(1 + 4\alpha\right) \times 0 . 52 \times 1</p><p></p><p>= 3 . 4 \times 0 . 52 \times 1 = 1 . 768</p><p></p><p>{T}_{b} = 1 . 768 + 373 . 15 = 374 . 918K</p><p></p><p>= 375K</p><p>Henceansweris(375)</p><p>Hence answer is \left(375\right)

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