11/22/2022 Lab report
Acid Base Titration
, Acid-Base Titration
Aim- To Determine the Relative Formula Mass (Mr) of an unknown acid
Introduction
A titration is an accurate procedure for measuring the unknown concentration of a solution,
using a standard solution.
The purpose of this experiment is to carry out a titration to work out the relative formula
mass (Mr) of an acid to find its identity. You are provided with a solution of an unknown
monoprotic acid (HA) and a solution of sodium hydroxide (NaOH) of concentration 0.100
mol dm-3.
Base is a compound that contains hydroxide ions e.g., NaOH and monoprotic acid is a
compound that contains H+ ions e.g., HCL. An indicator phenolphthalein is used to detect
the end point of the titration with a colour change (e.g., at the end of the titration
phenolphthalein changes from colourless to pink).
Required Equipment and Material (per group)
Burette (50 cm3)
Pipette (25 cm3)
Clamp, boss and stand
Pipette filler
Small filter tunnel
Conical flasks (250 cm3)
Small beaker (100 cm3)
Large beaker (250 cm3)
White tile
Access to standard 0.100 mol dm-3 NaOH(aq)
Access to the solution of unknown acid
Access to phenolphthalein indicator
Safety glasses, lab coats and gloves
Precautions
Always wear lab coats, safety glasses and gloves for protection.
Acid Base Titration
, Acid-Base Titration
Aim- To Determine the Relative Formula Mass (Mr) of an unknown acid
Introduction
A titration is an accurate procedure for measuring the unknown concentration of a solution,
using a standard solution.
The purpose of this experiment is to carry out a titration to work out the relative formula
mass (Mr) of an acid to find its identity. You are provided with a solution of an unknown
monoprotic acid (HA) and a solution of sodium hydroxide (NaOH) of concentration 0.100
mol dm-3.
Base is a compound that contains hydroxide ions e.g., NaOH and monoprotic acid is a
compound that contains H+ ions e.g., HCL. An indicator phenolphthalein is used to detect
the end point of the titration with a colour change (e.g., at the end of the titration
phenolphthalein changes from colourless to pink).
Required Equipment and Material (per group)
Burette (50 cm3)
Pipette (25 cm3)
Clamp, boss and stand
Pipette filler
Small filter tunnel
Conical flasks (250 cm3)
Small beaker (100 cm3)
Large beaker (250 cm3)
White tile
Access to standard 0.100 mol dm-3 NaOH(aq)
Access to the solution of unknown acid
Access to phenolphthalein indicator
Safety glasses, lab coats and gloves
Precautions
Always wear lab coats, safety glasses and gloves for protection.
