A buffer solution consists of 1 mole each of HA and its conjugate base A^(-), Addition of which of the following decreases the pH of buffer ?

A buffer solution consists of 1 mole each of HA and its conjugate base

1.	A buffer solution consists of 1 mole each of HA and its conjugate base A^(-), Addition of which of the following decreases the pH of buffer ?
Answer» 0.1 MOLE of HA 0.1 mole of `A^(-)` 0.1 mole of `NAOH` WATER ANSWER :A