Resistance of 1 N `CH_(3)COOH` is 250 ohm. This conductive cell has constant value of 1.15 `cm^(-1)`, then what is equivalent conductivity of 1N `CH_(3)COOH` ? `(Ohm^(-1)" "cm^(2)" "equ^(-1))`.

Options

A. 18.4
B. 4.6
C. 9.2
D. 2.3

Answer

B

Explanation

(i) Conductivity=`(C)=(1)/(R)=(1)/(25)`
=0.004 `Ohm^(-1)`
(ii) Specific conductivity :
(K)=conductivity`xx`cell constant
`=0.004xx1.15(ohmxxcm^(-1))`
`=0.00460ohmxxcm^(-1)`
(iii) equivalent conductivity :
`(lamda)=(1000K)/(C)=(1000xx0.0046)/(1)`
`=4.6ohm^(-1)cm^(2)equ^(-1)`.