`1 M `benzoic acid `(pK_(a)=4.2)` and `1 M C_(6)H_(5)COONa` solutions are given separately. What is the volume of benzoic acid required to prepare a `93mL` buffer solution of `pH=4.5`?

1 M benzoic acid (pK_a=4.20) and 1 M C_6H_5COONa solutions are given separately What is the volume of benzoic acid required to prepare a 300 ml buffer solution of pH =4.5 ? [log 2 =0.3]

Calculate the amount of benzoic acid (C_6H_5COOH) required for preparing 250 mL of 0.15 M solution in methanol.

Calculate the amount of benzoic acid (C_6H_5COOH) required for preparing 250 mL of 0.15 M solution in methanol.

What is the volume of concentrated H_2SO_4 that will be required to prepare 2L of a 5(M) sulphuric acid solution?

Calculate the amount of benzoic acid (C_(6) H_(5) COOH) required for preparing 250 mL of 0.15 M solution in methanol.