For a given mixture of NaHCO3 and Na2CO3 volume of a given HCl required is X ml with phenolphthalein indicator and further Y ml required with methyl orange indicator. Hence volume of HCl for complete reaction of NaHCO3 is 2x x/2 y y-x Share with your friends Share 30 Mohan Kumar answered this Dear Student, Regards 7 View Full Answer Ramninder Singh Purba answered this 2x -16 Prithesh Dwivedi answered this How ? -7 Sukanya answered this This is the required explanation 46