See image — AITS & Test Series Chemistry Question

💡 Solution & Explanation

Meq of H3PO4 = 300  0.1 = 30 Meq of NaOH = 50  0.1 = 5 H3 PO4 + NaOH = NaH2 PO4 + H2O 30 5 0 0 25 0 5 5 Solution is buffer pH = 1 ka P + log 5 25  3 + log 1/5  2.3010 AITS-FT-IX (Paper-1)-PCM(Sol.)-JEE(Advanced)/19 FIITJEE Ltd., FIITJEE House, 29-A, Kalu Sarai, Sarvapriya Vihar, New Delhi -110016, Ph 46106000, 26569493, Fax 26513942 website: www.fiitjee.com 10