THERMOMETRIC TITRATION

Authors Avatar

CHEMISTRY COURSEWORK

THERMOMETRIC TITRATION

Aim

The purpose of this experiment is to determine the concentrations of two acids, hydrochloric acid, HCl, and ethanoic acid, CH3CO2H, by thermometric titration; and having done that, to calculate the enthalpy change of neutralisation.

Introduction

You titrate both hydrochloric acid and ethanoic acid in turn with a standardized solution of sodium hydroxide and record the temperatures of the mixtures during the course of the titration. In each case a plot of temperature against time will enable you to determine the maximum temperature rise, from which you calculate both the concentration of the acid and the enthalpy change of neutralisation.

Requirements

  • Safety spectacles
  • Pipette, 50.0 cm3
  • Pipette filler
  • Expand polystyrene cup
  • Sodium hydroxide solution , 1 m NaOH (standardized)
  • Thermometer, 0-50 C0 (in 0.1 C0)
  • Burette , 50.0 C0 cm3
  • Filter funnel , small
  • Hydrochloric acid , M  HCl
  • Ethanoic acid, M CH3CO2H

Safety/risk assessment: 
During experiment in laboratory extreme care should be taken to avoid any hazards. You should wear all the safety equipment at all times during the experiment.
Eye Protection: Make sure that your eyes are fully protected. Goggles should be worn at all times during the experiment in the laboratory.
Laboratory Coats: Lab coats should be worn during experiment to avoid damage to your clothes and skin.
Laboratory environment: Experiment should be taken place in a wide space and try to avoid having any unwanted stuff around you as it can come in contact with the chemicals and cause damage.
Handling Acids: 

Join now!

Sodium hydroxide: 

sodium hydroxide is very corrosive and can

  • Cause severe burns
  • Cause permanent eye damage
  • Be very harmful if ingested                                          

Hydrochloric Acid (HC l): 
HCl is very toxic and can cause following damage:

  • Concentrated HCl can form mists. Both the mists are solution have corrosive effect on human tissues.
  • Can cause damage your respiratory organs
  • Burn your skin severely
  • Cause damage to your eye sight if came into contact with eyes.
  • It can also ...

This is a preview of the whole essay