How many mole of HCN will be required to prepare one litre buffer solution of pH=10.4 using 0.01 mol NaCN?
How many gram moles of HCl will be required to prepare one litre of a buffer solution (containing NaCN and HCN) of pH 8.5 using 0.01 gram formula weight of NaCN ?
Ka (HCN) = 4.1 × 10−10