Question
At 25^ C , the molar conductance at infinite dilution for the strong electrolytes NaOH , NaCl and BaCl _ 2 are 248 10^ -4 , 126 10^ -4 and 280 10^ -4 Sm ^ 2 ~mol ^ -1 respectively. _ m ^ 0 Ba ( OH )_ 2 in Sm ^ 2 ~mol ^ -1 is
BITSAT
Chemistry
Electrochemistry
2021
BITSAT 2021
BITSAT Chemistry Question (2021) — Solution
Options
- A. 52.4 10^ -4
- B. 524 10^ -4
- C. 402 10^ -4
- D. 262 10^ -4
Answer
B. 524 10^ -4
Step-by-step solution
_ Na ^ + ^ + _ OH ^ - ^ =248 10^ -4 Sm ^ 2 ~mol ^ -1 _ Na ^ + ^ + _ Cl ^ - ^ =126 10^ -4 Sm ^ 2 ~mol ^ -1 _ Ba ^ ^ 2+ + _ 2 Cl ^ - ^ =280 10^ -4 Sm ^ 2 ~mol ^ -1 NoW , _ Ba ( OH )_ 2 ^ = _ BaCl _ 2 ^ +2 ^ _ NaOH ^ -2 _ NaC 1 ^ _ Ba ( OH )_ 2 ^ =280 10^ -4 +2 248 10^ -4 -2 126 10^ -4 _ Ba ( OH )_ 2 ^ =524 10^ -4 Sm ^ 2 ~mol ^ -1
Related: Chemistry — Electrochemistry · All PYQ Banks