Question

A 25.00 mL sample of hydrochloric acid was titrated with 0.7425 M sodium hydroxide. A total of 21.24 mL of the base was required to reach the equivalence point.

a) Write a balanced molecular equation for this reaction?

b) What was the concentration of the hydrochloric acid?

Answer 1

a)HCl + NaOH -->> NaCl + H₂O

b) 0.7425/25 = 21.24/X

= 0.7425 ×21.24/25

= 0.631g/mol