Question
What must be the molarity of BaCl _2 solution to have molar conductivity 240\, ^ -1 cm ^2 mol ^ -1 and conductivity 0.012\, ^ -1 cm ^ -1 at 25^ C ?
MHT CET
Chemistry
Electrochemistry
2026
MHT CET 2026 (19 April Shift 2)
MHT CET Chemistry Question (2026) — Solution
Options
- A. 0.01 M
- B. 0.02 M
- C. 0.05 M
- D. 0.1 M
Answer
C. 0.05 M
Step-by-step solution
The relationship between molar conductivity _m, conductivity , and molarity M is given by the formula: _m = 1000 M Given values are: _m = 240 \, ^ -1 cm ^2 mol ^ -1 = 0.012 \, ^ -1 cm ^ -1 Substituting the given values into the formula: 240 = 0.012 1000 M 240 = 12 M M = 12 240 M = 0.05 \, M Answer: 0.05 M
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