Question

Question 2. Suppose 10-4 M chloroacetic acid (a) (2.5 pts) What are the sources of proton? Which proton source can be ignored and why? (b) (2.5 pts) What is the pH of the solution? (c) (2.5 pts) Show and confirm any assumptions made in calculation of pH. (d) (2.5 pts) What is analytical concentration of chloroacetic acid?

Answer 1

are the Strong (a) Generally acids sources of proton. a weak acich proton saurce can be ignored. they very weak dinsociated in the aqueous solution Because are The pH of the solution 3.43 10 C/ CH₂ CO2H Ź dl cl Cog Lep dissociation constant in a PHY " the at fiant conce at oqlu c-ca ca ca Now, equilibrium constant. (ka) = ca.ca c-ca can as X very low then, 1-4 7 1 Now, C&r=1.35 x 10-3 1.35*10-3 42 1or 4 G 13.5 3,67 (H) = ca 3167xw 4 pH = -log[41) = -10[2.64 x 10-4) 3.43 Analytical concentration of chloroacetic acid in 10-4 (M)