2) A student carries out a titration to determine the concentration of some hydrochloric acid. The student titrates the hydrochloric acid against a standard solution of sodium carbonate,
Na2CO3. The equation is shown below.
Na2CO3(aq) + 2HCl (aq) + 2NaCl (aq) + H2O(l) + CO2(g)
The student prepares 0.150 mol dm-3 Na2CO3 in a 250.0 cm3 volumetric flask.
The hydrochloric acid is added to a 50.0 cm3 burette.
The student pipettes the Na2CO3(aq) using a 25.0 cm3 pipette. en sosial
The student's obtained concordant results and determined the mean volume of HCI used to
be 24.25cm3
Calculate the concentration, in mol dm-3, of the hydrochloric acid.
Give your answer to 3 significant figures.
3 marks.