Question

how does dilution with water affect ph of buffer solution​

Answer 1

$\huge\bf\green{Answer}$

Generally, dilution has NO effect on the pH. Why is this so? If you look at the buffer formula, pH = pKa + lg [salt]/[acid], dilution does not affect the [salt]/[acid] ratio. i.e. they are diluted to the same extent or volume would cancel out