Phenol, C6H5OH (also called as carbolic acid) is a mildly acidic compound, commonly used as a disinfectant. It has a Ka value of 1.31010. Questions a-e below are connected to each other and relate to phenol. ( 10 marks) (a) What is the pKa of phenol? ( 1 mark) (b) What is the pH of 0.1M solution of Phenol in water? Hint: Since Phenol is a weak acid, you can assume it dissociates to a very small extent. ( 2 marks) (c) Sodium phenoxide, NaOC6H5, is a phenol salt that is commonly used to prevent or slow down the growth of bacteria, hence, is used to protect personal care products. It's anion, phenolate, is the conjugate base of phenol. What is the pH of 0.1M solution of NaOC6H5 ? [ 3 marks] (d) Consider following two acids, phenol and benzoic acid. State which of these molecules are (i) aromatic and (ii) can form hydrogen bonds. [2 marks] (e) Between phenol and benzoic acid, which is more acidic? Provide a reason for your answer. [ 2 marks]