$0.2 \ g$ of fine animal charcoal is mixed with half litre of acetic acid solution and shaken for $30 \ minutes$. What happens to the concentration of the acetic acid solution?

The correct statement regarding chemisorption is

Which plot is the adsorption isobar for chemisorption where $x$ is the amount of gas adsorbed on mass $m$ at temperature $T$?

Which of the following statements is correct for chemisorption?

In the adsorption of a gas on a solid,the Freundlich isotherm is obeyed. If the slope of the plot of $\log(\frac{x}{m})$ versus $\log(p)$ is zero,then the extent of adsorption is:

The given graphs $I$,$II$,$III$,and $IV$ represent general trends observed for different physisorption and chemisorption processes under mild conditions of temperature and pressure. Which of the following choice$(s)$ about $I$,$II$,$III$,and $IV$ is (are) correct?
$(A)$ $I$ is physisorption and $II$ is chemisorption
$(B)$ $I$ is physisorption and $III$ is chemisorption
$(C)$ $IV$ is chemisorption and $II$ is chemisorption
$(D)$ $IV$ is chemisorption and $III$ is chemisorption