acid-base titration lab

acid-base titration lab


Acid-Base titration labs are often done to determine the amount or concentration of an acid or base in a substance. This is done through adding a base to an acid or and acid to a base. The analyte also known as the titrand is the solution with the unknown molarity. The reagent also known as the titrant is the solution with the known amount of molarity. The reagent reacts with the analyte to obtain the information. In a titration lab the analyte is first prepared by dissolving the studied substance into a solution. A small amount of indicator is then added to a flask along with the titrand. Next the titrant is placed into a burette and is slowly added to the analyte and the mixture of the indicator. When the indicator causes a change in the colour of the solution, the amount of reagent used is recorded.

HCL also known as hydrochloric acid is a clear colourless liquid, and a highly pungent solution of hydrogen chloride in water. It is a highly corrosive, strong mineral acid with many industrial uses. Naturally hydrochloric acid is found in gastric acid.

NaOH also known as sodium hydroxide, caustic soda, or lye is an inorganic compound. It is a white solid and highly caustic metallic base & alkali salt available in pellets, flakes, granules, and as prepared solutions. NaOH is a high alkaline chemical compound often used for making cleaning and paper products.


In this lab HCl was added to NaOH to determine the amount of acid required to neutralize the base.


Approximately 35 drops are required to neutralize the NaOH solution


100 ml beaker
50 ml beaker
A medicine dropper
pH indicators and pH scale

Procedure :

1. Gather together a burnette, a squeeze bottle containing distilled water, a 100 beaker, a 50 ml beaker. Rinse all equipment well with tap water. Dry beaker with paper towel.
2. Place 0.2M HCl in 50 ml...

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