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The ionic conductivity of the cation and anion of the uni-univalent salt is 140 and 80 ohm-1 cm2 mol-1 respectively. The molar conductivity of the salt is:
  • a)
    280 ohm-1 cm2 mol-1 
  • b)
    60 moles
  • c)
    160 ohm-1 cm2 mol-1 
  • d)
    220  ohm-1 cm2 mol-1 
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
The ionic conductivity of the cation and anion of the uni-univalent sa...
The correct answer is option D
The molar conductivity of uni-univalent electrolyte like AB = sum of their ionic conductivities = 140 + 80 = 220 ohm-1 cm2 mol-1
 
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Most Upvoted Answer
The ionic conductivity of the cation and anion of the uni-univalent sa...
Given: Ionic conductivity of cation (k+) = 140 ohm-1cm2mol-1
Ionic conductivity of anion (Cl-) = 80 ohm-1cm2mol-1

To find: Molar conductivity of the salt

Formula: Molar conductivity of the salt = (ionic conductivity of cation + ionic conductivity of anion) × 1000 / Molar conductivity of the salt

Calculation:

Molar conductivity of the salt = (ionic conductivity of cation + ionic conductivity of anion) × 1000 / Molar conductivity of the salt

Molar conductivity of the salt = (140 + 80) × 1000 / 2

Molar conductivity of the salt = 220 × 1000 / 2

Molar conductivity of the salt = 110000 / 2

Molar conductivity of the salt = 55000 ohm-1cm2mol-1

Hence, the correct option is (D) 220 ohm-1cm2mol-1.
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Community Answer
The ionic conductivity of the cation and anion of the uni-univalent sa...
According to kohlrausch law,
lim. molar conductivity = anion + cation
140+80= 220
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The ionic conductivity of the cation and anion of the uni-univalent salt is 140 and 80 ohm-1cm2mol-1respectively. The molar conductivity of the salt is:a)280 ohm-1cm2mol-1b)60 molesc)160 ohm-1cm2mol-1d)220 ohm-1cm2mol-1Correct answer is option 'D'. Can you explain this answer? for Class 12 2025 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about The ionic conductivity of the cation and anion of the uni-univalent salt is 140 and 80 ohm-1cm2mol-1respectively. The molar conductivity of the salt is:a)280 ohm-1cm2mol-1b)60 molesc)160 ohm-1cm2mol-1d)220 ohm-1cm2mol-1Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 12 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The ionic conductivity of the cation and anion of the uni-univalent salt is 140 and 80 ohm-1cm2mol-1respectively. The molar conductivity of the salt is:a)280 ohm-1cm2mol-1b)60 molesc)160 ohm-1cm2mol-1d)220 ohm-1cm2mol-1Correct answer is option 'D'. Can you explain this answer?.
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