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

To find out from a range of tablets which tablet is the best one to neutralise hydrochloric acid.

Extracts from this document...


Science coursework Neutralisation: The King Of Remedies By Nazreen Kosar Hussain Planning Task Title To find out from a range of tablets which tablet is the best one to neutralise hydrochloric acid. Aim My aim is to determine which tablet is the best for stomach acid (neutralises the most hydrochloric acid). Scientific Background Acids and Alkalis Many of the substances that we use today are made up of either acids or alkalis. These are two chemical opposites. Most acids are liquids. They are very corrosive and can kill or burn skin cells, bacteria etc. Acids taste sharp and sour. Strong acids such as hydrochloric acid, sulphuric acid etc release hydrogen quickly whilst weaker acids such as citric acid and carbonic acid release hydrogen slowly. Strong acids measure at 1 or 2 on the pH scale and weak acids measure at 5 or 6 (The pH is a number on a scale which shows how acidic or alkaline a substance is). Most pure alkalis are solid. Like acids they are also very corrosive. ...read more.


Method Firstly I will measure 30 ml of water in a measuring cylinder. Secondly I will put this water into a plastic beaker and dissolve a tablet into it. I will stir it with a stirring rod. After this I will add 7 drops of Universal indicator to the solution and stir it. I will put some Hydrochloric acid into a pipette and add it to the solution until it is neutral counting how many drops I add. Finally I will do this experiment twice for each tablet. Fair Test To make this test fair firstly I will make sure that I use the same amount of water and universal indicator. I will also dissolve the same amount of tablet each time. I will make sure that all the water used is all at the same temperature. Finally I shall do each experiment twice to ensure that I obtain accurate results. Equipment Measuring Cylinder, Water, Thermometer, Plastic Beaker, Stirring Rod, Pipette, Hydrochloric acid, Universal Indicator-Phenophatlein, Tablets - Gaviscon, Settlers, Tums, Calcium Carbonate Apparatus ...read more.


(? Gaviscon + acid ? neutral) I had predicted that whichever tablet neutralises the most hydrochloric acid is the best. I did not specify a certain tablet. This ties in with my prediction as it does neutralise the most. Tums was the next best then Settlers and finally Calcium Carbonate. There are no anomalies in my work. Evaluation Accuracy and Reliability I feel that I could have made my results more accurate by doing the experiment another time as I could have miscounted the drops. I think the reliability of my results is fair but improvements could have been made to make it a 100 per cent accurate. Improvements Paying more attention to the different colours on the pH scale so that the overall pH number written could have been more accurate would have made improvements to the investigation. Extending the Investigation I could extend the investigation by using different types of water e.g. hot and cold. I could also have timed the experiment to see which tablet neutralises the fastest. I could also have tried using a wider range of tablets. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Physical 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 AS and A Level Physical Chemistry essays

  1. Marked by a teacher

    Finding out how much acid there is in a solution

    The burning of a carbonate is a type of reaction called a Decomposition reaction. Here is the equation for this chemical reaction, which is a neutralization reaction: Na2 CO3 (aq) + H2SO4 Na2SO4 (aq) + H2O (l) + CO2 (g)

  2. Indigestion Tablet

    Literature review: Indigestion, also known as dyspepsia, is a vague feeling of discomfort and pain in the upper abdomen and chest, including a feeling of fullness and bloating, accompanied by belching and nausea. Digestion is caused by eating particular foods, drinking alcoholic or carbonated beverages, eating too fast or too

  1. Analysis of commercial vitamin C tablets

    No. of moles of I2 is reacted by vitamin C = no. of moles of I2 added to react with vitamin C - no. of moles of excess I2 = no. of moles of vitamin C reacted [by equation I] ?

  2. Investigating the Rate of the Reaction between Bromide and Bromate Ions in Acid Solution

    /cm3 Volume of solution D /cm3 Volume of 0.0001M phenol /cm3 6.0 4.0 10.0 15.0 5.0 (Table 3.3.1) Table 3.3.2 below shows the results I obtained at different temperatures. All times are given to the nearest second, all temperatures are given to the nearest half a second and anomalous results are highlighted: Intended Temp.

  1. Aspirin tablets

    Mass of 2-ethanoyloxybenzoic acid = 0.00855 x (12x9+8+16x4) = 1.54g 6. Percentage of 2-ethanoyloxybenzoic acid in aspirin tablets = 1.54/1.76x100% = 87.5% Conclusion: The percentage of 2-ethanoyloxybenzoic acid in aspirin tablets is 87.5%. Questions: 1. Why is the mixture simmered gently and carefully during hydrolysis?

  2. Chemistry planning exercise

    acid solution approximately 0.1 mol. o Pipette, 25 cm3 o Pipette filler o Standard solution of sodium carbonate o 4 conical flasks, 250 cm3 o Methyl orange indicator o White tile o Wash bottle of distilled water Method 1. Using the funnel, rinse the burette with the sulphuric (VI)

  1. Neutralization investigation

    This means that acids and alkalis have different (charges?) and this is why they have different properties. How are alkalis and Acids measured, and how do they vary? I now know that acids and alkalis are compounds which dissolve in water to form hydrogen or hydroxide as their only positive

  2. An experiment to find the strength of five Household Acids And Alkalis.

    Despite their usefulness Acids and Alkalis are, potentially very dangerous and this brings me to the point of this experiment. All of the Acids and Alkalis used in household agents are quite strong, obviously some are stronger than others. So they are obviously very dangerous, especially if swallowed or spilt in eyes.

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