why delta G for adsorption is negative as delta H is negative but delta S is +ve ???
Expression relating free energy change in a process is related to enthalpy change and entropy change by the expression,
If change in enthalpy is negative and change in entropy is positive, the value of T S will be negative. Hence, free energy change will always be negative.
If change in enthalpy is negative and change in entropy is positive, the value of T S will be negative. Hence, free energy change will always be negative.