A Solution of weak acid HA was titrated with base NaOH The

Last updated: 7/2/2023

A Solution of weak acid HA was titrated with base NaOH The equivalent point was reached when 40ml of 0 1M NaOH has been added Now 20ml of 0 1M HCI were added to titrated Solution The pH was found to be 5 What will be the pH of the Solution obtained by mixing 20ml of 0 2M NaOH and 20ml 0 2M HA A 7 B 4 C 9