In Freundlich adsorption isotherm at moderate pressure,the extent of adsorption $\left(\frac{x}{m}\right)$ is directly proportional to $P^x$. The value of $x$ is

During the adsorption of a gas on a solid at low temperature,which of the following thermodynamic conditions is correct?

Adsorption increases when:

Which among the following gases is least adsorbed on a solid at similar conditions of temperature and pressure?

For the adsorption of hydrogen on platinum,the activation energy is $30 \ kJ \ mol^{-1}$ and for the adsorption of hydrogen on nickel,the activation energy is $41.4 \ kJ \ mol^{-1}$. The logarithm of the ratio of the rates of chemisorption on equal areas of the metals at $300 \ K$ is $........$ (Nearest integer). Given: $\ln 10 = 2.3$,$R = 8.3 \ J \ K^{-1} \ mol^{-1}$.

Plot of $\log \left( \frac{x}{m} \right)$ against $\log P$ is a straight line inclined at an angle of $45^o$. When the pressure is $0.5 \ atm$ and Freundlich parameter,$k$ is $10$,the amount of solute adsorbed per gram of adsorbent will be ...... $g$ $(\log 5 = 0.6990)$