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.

The answer is d.potassium

Ithe undersigned only for use your own email and delete any and copies and of the itself and to be there is a good timewhat does a decrease in temperature indicate about the molecules in a sample of liquid water? decreased chemical energy of the moleculesdecreased kinetic energy of the moleculesincreased chemical energy of the moleculesincreased kinetic energy of the moleculeshow does a sample of helium at 15 â°c compare to a sample of helium at 215 k? the helium at 15 â°c has a higher average kinetic energy than the sample at 215 k.the helium at 15 â°c has lower nuclear energy than the sample at 215 k.the helium at 15 â°c has slower-moving atoms than the sample at 215 k.the helium at 15 â°c has smaller atoms than the sample at 215 k.