Composition of a Mixture by Acid-Base Titration A 1.00-9 solid sample containing a mixture of table salt (NaCl) and eitric acid (H3C6H5O7, a triprotic acid) is dissolved in 15mL of water. Titration of the acid solution requires 39.90mL of 0.2618MNaOH solution to reach the endpoint. Calculate the mass percent H3C6H5O7 in the solid mixture. (Number only) Tries 0/10 Copynight Department of Chemitity, Simon Fraser Univeriity. O SFU Chemisty 200020. This discussion is closed