How many litres of water must be added to I L of an aqueous solution with a pH of 1 to create an aqueous solution of pH of 2?

pH=1  ∴H+=10-1=0.1MpH=2 ∴H+=10-2=0.01M For dilution of HCl: M1V1=M2V20.1×1=0.01×V2V2=10 LVolume of water to be added = 10-1 = 9L