JEE Main · 2016 · 03 Apr 2016 · Offline · Surface Chemistry

For a linear plot of

lo g (x / m)

versus

lo g p

in a Freundlich adsorption isotherm, which of the following statements is correct ? ( k and n are constants)

Answer: (B)

Solution

The Freundlich isotherm is

\frac{x}{m} = k p^{1/ n}

. Taking logarithms turns it into

lo g \frac{x}{m} = lo g k + \frac{1}{n} lo g p

, a straight line in

lo g p

. Matching this to the form

y = c + (slope) x

, the slope of the plot is

\frac{1}{n}

and the intercept is

lo g k

. So only

\frac{1}{n}

appears as the slope.

JEE Main · 2016 · 03 Apr 2016 · Offline · Single correct option