• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Titration - The aim of this experiment is to determine the volume of acid that will react with a carefully measured volume of alkali (base).

Extracts from this document...

Introduction

Titration Aim The aim of this experiment is to determine the volume of acid that will react with a carefully measured volume of alkali (base). Prediction Universal indicator Acid Alkali Neutral Red Purple Green Methyl orange Acid Alkali Neutral Red Yellow Yellow Methyl red Acid Alkali Neutral Orange Blue Red Phenolphthalein Acid Alkali Neutral Clear Purple Clear My prediction when using 10ml of 0.02m solution of sodium hydroxide (NaOH) is that 75ml of hydrochloric acid (HCl) will be needed for neutralisation. I also predict that when using 10ml of 0.15m solution of sodium hydroxide is that 15ml of sulphuric acid (H2SO4). ...read more.

Middle

This was released slowly until the indicator turned green showing neutralisation had taken place. The test was repeated exactly but instead of HCl, H2SO4 with a molar of 0.1 was used in its place. The amount of acid used to neutralise the base was recorded in both cases. The type and volume of acid that was used in these tests were variable. Safety Normal laboratory safety conditions applied. Other safety precautions that had been taken were goggles were worn to protect eyes, lab coats were worn to protect clothing and distilled water was close by for rinsing any spillages. Results The results in volume shown are the amount of each chemical used to achieve neutralisation and change the universal indicator green. ...read more.

Conclusion

Evaluation The titration process was successfully completed in both experiments. Although my prediction for the first experiment was very close to the result, whereby I predicted a result of 75ml and the amount used was actually 78ml of acid. The prediction and result for my second experiment was not close, predicting 15ml when only 5.6ml of acid were needed to complete a titration. This could have been due to the fact that there were two hydrogen ions in every molar of sulphuric acid making the acid stronger and ionising over two steps. The more hydrogen ions an acid produces the stronger it is. Therefore for every 1 unit of acid needed two units of alkali would be needed. This experiment was done accurately and correctly. It also went very well. Kristy Kish ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Aqueous Chemistry section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Aqueous Chemistry essays

  1. Marked by a teacher

    Investigate the effect of changing the concentration of sodium hydroxide (alkali) on the volume ...

    4 star(s)

    This prediction is made because in the dilute alkali there are not many OH? ions. In concentrated alkali there are a lot more. Because the number of alkali particles in a higher concentrated alkali solution is more than that in a concentrated one, more successful collisions will occur causing the reaction to speed up.

  2. Marked by a teacher

    Enthalpy of Neutralisation.

    3 star(s)

    salt + water Or in terms of ions as: H+(aq) + OH- (aq) = H2O(I) Neutralization is a common event and is utilized by many things; some essential to our existence, such as bile's neutralization of stomach acids so that enzymes in the small intestine can function.

  1. Investigation into the volume of acid needed to neutralise an alkali.

    This is also the same for if you choose to change the concentration of the alkali. This is because the volume of alkali and the volume of acid and the concentration of alkali and the volume of acid are on different sides of the equation; therefore if one thing increases the other must also.

  2. Find out the percentage of citric acid present in lemon squash by using a ...

    suck up the water (which would also make more time for the investigation, also on the table I will place a few heatproof mats which will work as safety apparatus and as a fair test. As the thermometers provided by the school are long and two of the beakers are

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work