Answer to Question #335058 in General Chemistry for fgfgf

Question

The concentration of ethanoic acid in vinegar was measured as follows: A 50 cm3 sample of vinegar was diluted to 500 cm3 using deionised water. The diluted solution was titrated against 25 cm3 portions of a standard 0.12 M sodium hydroxide solution, using a suitable indicator. Titration reaction: CH3COOH(aq) + NaOH(aq) → CH3COONa(aq) + H2O(aq) After carrying out a number of accurate titrations of the diluted solution of ethanoic acid, the mean titration figure was found to be 20.5 cm3 . a) Calculate the concentration of ethanoic acid in the diluted vinegar solution in moles per liter. 

Answer 1

c(Acid)=0.05 mol/l