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

Analysis Of Aspirin Tablets

Extracts from this document...


Vikesh kakad Analysis Of Aspirin Tablets Research Question The constraint given to us by the teacher was that, we had to determine, which from the three brands of Aspirin given represents the best value for money and worth purchasing? , Using a standard solution of Sodium Hydroxide (NaOH). C6H5(OCOCH3)COOH + NaOH --> C6H5(OCOCH3)COO Na + H2O . (aq) (aq) (aq) (l) Hypothesis Aspirin drug is the most common medicine that is taken by people, from its history salicylic acid was used as a medium of painkiller and fever depressant. Because of it being strong, salicylic acid can damage the oesophagus and stomach membranes. As time passed the compound was modified and making it safer to intake thus making it more effective. Which is what we now call as Aspirin. The effectiveness of this tablet may depend on the mass of the tablet; this is because the tablet with more mass will have more the amount of Aspirin (C9 H8 O4) ...read more.


- 3 different Brands of Tablets - Phenolphthalein Indicator Procedure - Choose a brand of tablet, note the brand and price per tablet and weight it. - Crush tablet using motor and pestle and rinse the power using distilled water in a conical flask - Add more distilled water until approximately 25 cubic cm. - Warm the solution, so as the tablet dissolves faster. - Add 3-4 drops of phenolphthalein indicator. - Titrate the Aspirin solution with 0.05mol per dm cube of NaOH - And record the reading - Repeat with another brand of tablet . Data collection The result were obtained as follows, Tablets Mass of tablet weighed in grams (� 0.05 g) Concentration of NaOH in mol per dm cube Volume of NaOH used in the burette. (� 0.05 cm3) Volume of NaOH Titered in with Aspirin .sol (� 0.005 cm3) ...read more.


and using all the information we had to calculate the percentage purity that would determine which Aspirin tablet represent the best value for money. However I discovered that the result I got resembled with my partner and other students as well, therefore I was convinced that I was on the right track. Improvements: 1: We could have performed few more tests with different amount of Aspirin tablets. However time was limited and we settled with a sensible result. 2: We could have made our work a bit fast so we could make further testing even though we had enough results we needed. Manipulating skills: We were carefully following every instruction given by the teacher on a piece of paper. We used the materials need in an amount that was needed and not wasting them by taking large amounts. And finish our experiment successfully with sensible results that would help us understand with out any damage . ...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. Indigestion Tablets Investigation

    The hydrochloric acid that I am using is very similar to the acid that is in the stomach. Carbonates "...all react with acids to give off carbon dioxide." (page 169) will react with an acid to produce a salt + water + carbon dioxide.

  2. Determine the percent aspirin in an aspirin tablet and to compare this with the ...

    and a strong base (sodium hydroxide) Aspirin is an analgesic drug that can be harmful if taken in excess. The main constituent is 2-ethnoylxybenzoic acid (acetyl salicylic acid.) The amount of aspirin in a sample can be quantified using its acidic properties in an acid-base reaction.

  1. Investigation into the efficiency of various indigestion tablets.

    The best I can do is keep the powder dispersed through the whole suspension evenly at all times, by swirling it almost at all times. After that, I will add three drops of methyl orange, the indicator. The suspension will now be yellow, as methyl orange turns alkalis yellow.

  2. Analysing aspirin tablets.

    into a conical flask. 5. Using a safety filler, she pipetted exactly 25 cm3 of the approx. 1.0 mol dm-3 NaOH on to the tablets, followed by the same volume of lime water. 6. She simmered the mixture gently on a tripod and gauzed over a bunsen for 10 minutes to hydrolyse the acetylsalicylic acid.

  1. the synthesis of azo dyes, aspirin and soap

    In order to prevent this, aspirin is thus buffered and combined with other medicines to produce some desired effect of reducing blood loss. 2) Commercial Synthesis The starting raw materials of the commercial aspirin reaction are: Phenol C6 H3 OH ( l )

  2. Preparation of aspirin - The chemical background This is the overall reaction that ...

    The esterification reaction occurs extremely slowly unless an acid catalyst is present. The mechanism of the reaction: Protonation of carbonyl oxygen- the carbonyl oxygen takes a proton from the catalyst acid double , then the proton (hydrogen ion) becomes attached to one of the lone pairs on the oxygen which is bonded to the carbon.

  1. Analysis of the content in Aspirin Tablet

    Chemicals: 2 aspirin tablets (0.802g, brand name ASPIRIN), 25ml 1.0M sodium hydroxide, 100cm3 0.05M Sulphuric acid, 24 drops of phenol red 5) Apparatus: 250cm3 conical flask X 3 250cm3 beaker X 2 50cm3 burette X 1 25cm3 pipette X 1 250cm3 Volumetric flask X 1 Plastic wash bottle X

  2. Indigestion - find out the composition of tablets which are for indigestion and compare ...

    Don't take aspirin for headaches, colds and coughs - take paracetamol instead. 6. Avoid taking anti-arthritis pain killers if at all possible: your doctor will advise. 7. Try not to let stressful situations upset you. Avoiding heart burn: 1.

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