Titration of Hydrochloric Acid and Sodium Carbonate

What is the purpose of titrating hydrochloric acid against sodium carbonate?

How much sodium carbonate is required to prepare 250 ml of standard solution?

What indicator is used in the titration process described?

What should be done first before filling the burette with sodium carbonate solution?

What is noted after adding sodium carbonate solution to the titration flask?

Experiment Aim

To determine the strength of a dilute hydrochloric acid solution by titrating it against a standard solution of sodium carbonate.

Materials

Burette
Pipette
Conical flask
Burette stand
Funnel
Stirrer
White glazed tile
Measuring flask
Hydrochloric acid
Sodium carbonate
Methyl orange
Watch glass

Procedure

Prepare a standard solution of sodium carbonate.
- Molecular weight of sodium carbonate is 106 g/mol.
- Dissolve 1.325 g of sodium carbonate in distilled water to make a 250 ml solution.
Fill the burette with the 10 M sodium carbonate solution.
Pipette 10 ml of hydrochloric acid solution into a clean, dry conical flask.
Add two drops of methyl orange indicator to the conical flask.
Titrate the hydrochloric acid solution with the sodium carbonate solution until the color changes to light pink.
Record the initial and final burette readings.
Repeat the experiment until identical readings are obtained.

Results

Determine the volume of sodium carbonate solution used to neutralize the hydrochloric acid.
Calculate the strength of the hydrochloric acid solution in g/L.

This quiz tests your understanding of the titration process used to determine the strength of a dilute hydrochloric acid solution against a standard sodium carbonate solution. It covers the materials needed, the procedure followed, and the analysis of results. Prepare to explore the chemistry behind acid-base titrations!