See image — AITS & Test Series Chemistry Question

💡 Solution & Explanation

Since 4 milli mole of NaOH was required to reach first equivalence point, the molecular wt. was 664 166 4 mg m mol  60 ml of NaOH is represented by a point midway to second equivalence point, at which pH = Pka2 = 8.08 At the first equivalence point, pH = 5.85 = 1 2 2 Pka Pka   Pka1 = 3.62 AITS-FT-VII-(Paper-2)-PCM (Sol.)-JEE(Advanced)/18 FIITJEE Ltd., FIITJEE House, 29-A, Kalu Sarai, Sarvapriya Vihar, New Delhi -110016, Ph 46106000, 26569493, Fax 26513942 website: www.fiitjee.com 10