1. The problem statement, all variables and given/known data Knowing that HCl is strong acid we want to prepare HCl solution of pH=4.2.starting from a solution of pH=2.9.Explain briefly the procedure that should be followed to do this operation. 2. Relevant equations pH=-log(H3O+) 3. The attempt at a solution I calculated: At beginningC(H3O+)=1.258×10^-3mol/L at end C(H3O+)= 6.309×10^-5mol/L and please I want to know is the procedure dillution?