Verified Solution • 2025–26 Session moderate

QJEEM21Chfdeb: JEE Main 2021 Chemistry - Class 12 JEEM21Chfdeb Solution: The molar conductivities at infinite dilution of barium…

The molar conductivities at infinite dilution of barium chloride, sulphuric acid and hydrochloric acid are 280, 860 and 426 S cm2 mol −- 1 respectively. The molar conductivity at infinite dilution of barium sulphate is _________ S cm2 mol −- 1. (Round off to the Nearest Integer ).

Step-by-Step Verified Solution

From Kohlrausch's law

Λm∞(BaSO4)=λm∞(Ba2+)+λm∞(SO42−)\Lambda _m^\infty (BaS{O_4}) = \lambda _m^\infty (B{a^{2 + }}) + \lambda _m^\infty (SO_4^{2 - })

Λm∞(BaSO4)=Λm∞(BaCl2)+Λm∞(H2SO4)−2Λm∞(HCl)\Lambda _m^\infty (BaS{O_4}) = \Lambda _m^\infty (BaC{l_2}) + \Lambda _m^\infty ({H_2}S{O_4}) - 2\Lambda _m^\infty (HCl)

=280+860−2(426)= 280 + 860 - 2(426)

=288= 288 S cm2 mol −- 1

Related Learning Resources & Exam Preparation

JEE Main PYQ Question Bank
Browse year-wise authentic previous years' questions with solutions
Authentic CBT Mock Tests
Simulate official exam environment with live timer and percentile scoring