PCl5 + 4H2O -> H3PO4 + 5HCl
If mol of PCl5 is reacted completely with water and the solution made up to , what is the volume of sodium hydroxide required to react with of this solution? (ans: )
A 1 g sample of a mixture of sodium carbonate and sodium hydrogencarbonate was titrated with HCl using phenolphthalein as indicator. If HCl were required, what is the percentage by mass of sodium hydrogencarbonate in the mixture? (ans: 62.9%)
how do i go about solving such questions where they're mixtures reacting with HCl? my ans differ a lot from the suggested answers for both.