Question

At `25^@C` molar conductance of ` 0.1` molar qqueous solution of ammonimum bhydroxide si `9.54 "ohm"^(-1) cm^2 "mol"^(-1)` and at infinite dilution its molar conductance si ` 238 "ohm"^(-1) cm^2 "mol"^(-1)`. The degree of ionisatiov and temperature is .
A. ` 20. 800 %`
B. ` 4 . 008 %`
C. ` 40 . 800 %`
D. ` 2 . 080 %`

Answer 1

Correct Answer - B
`Lambda_(infty)` for acetic acid at infinites dilution `238 "ohm"^(-1) cm^@ "mol"^(-1)`
` Lambda_C` for acetic at conc . `C=9. 54 ohm^(-1) cm^2 "mol"^(-1)`
` :. alpha = (Lambda_C)/(Lambda_(infty)) = (9. 54)/(238) = 4. 0008%`.