The molar conductivity of `KCl` solution at different concentrations at `298 K` is given below `:`
`{:(c or M (mol L^(-1)),wedge_(m)(Scm^(2)mol^(-1))),(0.000198,148.61),(0.000309,148.29),(0.000521,147.81),(0.000989,147.09):}`
Show that a plot between `wedge_(m)` and `sqrt(c)` is a straight line. Determine the value of `wedge_(m)^(@)` and `A` for `KCl` .

Explanation

To solve the problem, we will follow these steps:

### Step 1: Calculate the square root of the concentration values
We will take the square root of each concentration value (c) given in the table.

- For \( c = 0.000198 \, \text{mol L}^{-1} \):
\[
\sqrt{c} = \sqrt{0.000198} \approx 0.01407
...