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

Method for Titration Process

Extracts from this document...


Method for Titration Process: PREPERATION OF TITRATION: Once the 25 ml of sodium carbonate is transferred into the conical flask, and 3 droplets of methyl orange is added, the preparation of sulphuric acid is required to be ready. Obtain approximately 100 ml of sulphuric acid, with its mystery concentration, in a beaker. I shall obtain the clamp and place it on the table. I will also obtain the burette and attach it to the clamp, where it will be held up in the air. Beforehand, the burette was washed with sulphuric acid, to wash off any other substances that were in the burette. This assists to obtain reliable data, and remove any contaminated material inside. Insert small amount of sulphuric acid to wash the burette. Whilst screwing the burette onto the clamp, care should be taken whilst attaching it, because the burette shouldn't be tightly screwed. IT should be stable whilst it is attached to the clamp. If it is tightly screwed, it can cause the burette to break. On top of the burette, place the funnel on top, and get ready to insert the sulphuric acid. I made sure that the tap was turned off, by twisting it until, the handle was facing horizontally. ...read more.


This table will help me to determine the average titre: I shall do a dry run, which is just a practice run through of the experiment. After that I shall start the actual experiment. My dry run may not be accurate, because it was my first time, and I may have made some mistakes. Do therefore, I shall learn from my mistakes in the dry run, and use my skills to carry out the experiment. I shall be doing 5 repeats so I gain reliable data. The repetition shall show the reliability, and I shall stop doing the experiment, once I receive 2 concordant titres. The glassware needs to be cleaned every time I do a repeat. I do this by washing the glassware, with the solution that is going to go in. for example, I shall wash the burette with sulphuric acid, because sulphuric acid shall go into the burette. I shall wash the bulb burette with sodium carbonate, because sodium carbonate will be going into the bulb burette. However, only small amounts of the solutions will be used to clean the equipment, because every drop of the solutions is important in the experiment. References: http://www.chemguide.co.uk/physical/acidbaseeqia/indicators.html This web page helped to explain the indicator methyl orange. ...read more.


Therefore, you divide it by 4) 2.65g is needed to make 250 ml of Na2 CO3 (0.25 dm�) with the concentration 0.1 mol dm��. Therefore, Na2 CO3 contains 0.025 moles, due to 2.65 g produces 0.1 mol dm� (0.025 x 106 = 2.65 g) ...Concentration of Sodium Carbonate...: Concentration = no. of moles / volume Concentration = 0.025 moles / 0.25 dm� Concentration = 0.1 mol dm� Here is the balanced equation of the neutralization reaction between sulphuric acid and sodium carbonate: 1 : 1 ratio Na2 CO3 (aq) + H2SO4 Na2SO4 (aq) + H2O (l) + CO2 (g) 0.25 : 0.25 25 ml 28.2 ml 0.1 mol dm� There is a ratio between the number of moles between sodium carbonate and sulphuric acid. It is a 1:1 ratio, therefore, the number of moles in sulphuric acid must be the same as sodium carbonate (0.25mol dm�). 25 ml of 0.1 mol dm� of Na2 CO3 is neutralized by 28.2 ml of H2SO4. What is the concentration of sulphuric acid used? Concentration of Sulphuric Acid: Concentration = no. of moles / volume Moles Volume (mol dm�) (dm�) Na2 CO3 0.0250 0.2500 H2SO4 0.0250 0.0282 Concentration = 0.0250 / 0.0282 = 0.8865 mol dm� I have found out that 28.2 cm� of sulphuric acid with the concentration of 0.8865 mol dm�, was needed to neutralise 25 ml of 0.025 mol dm� of sodium carbonate. ...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. Heat of Neutralization

    Thus, in this experiment, the heat absorbed by the cup would be considered, lid, thermometer and the rest of the surroundings negligible. Therefore: Heat (q) released by the reaction = - heat (q) absorbed by the solution Heat released We would record the temperatures of the acid and base solutions before mixing to get.

  2. Drug: Antacid Effectiveness Analysis To determine the neutralizing ability of antacids in different ...

    Also, fatal metabolic imbalance may occur, taking too much calcium carbonate will weaken bones and initiate serious muscle cramping. 3. Do milk and cheese provide the same effect as antacid? One of the oldest remedies for heartburn was drinking milk or eating cheese.

  1. Determination of the content of Mg (OH)2 in an indigestion remedy by back titration ...

    Fourthly, a significant part of any titration is the indicator that is used to measure the end point, if it is not suitable then this can also cause discrepancies. The pH of the Magnesium hydroxide mixture and HCl reaction could have been measured using a pH meter, the resulting pH

  2. Investigating how concentration affects rate of reaction

    Rinse mouth. Do not induce vomiting. Refer for medical attention. Spillage n/a n/a Do not absorb in saw-dust or other combustible absorbents. Personal protection: complete protective clothing including self-contained breathing apparatus. Do not let this chemical enter the environment. Storage n/a Separated from combustible and reducing substances, strong oxidants, strong bases, food and feedstuffs, incompatible materials.

  1. Acid-base titration. Objective To determine the concentration of sulphuric acid (H2SO4) using sodium ...

    This step was repeated once. 4. Step 3 was followed to rinse the burette with several cm3 of the given sulphuric acid (but not with water). This step was repeated once. 5. The stopcock of the burette was closed. The given sulphuric acid was poured through the funnel into the burette until the liquid level was near zero.

  2. The Determination of rate equation

    graph shown above I can conclude that the order for sodium thiosulphate is first order and thus the rate equation of sodium thiosulphate should look like this: The rate of reaction = K [Na2S2O3] Using flow chart to determine the order Using the same flowchart shown above I am also

  1. Alkaloids are the most diverse group of secondary metabolites and over 5000 compounds are ...

    The synthesis of cocaine is as follows: A Robinson- type reaction yielded the expected azabicyclo structure but with a fortuitous axial stereochemistry for the carbomethoxyl group. Racemic cocaine was formed after separation of the diastereoisomeric products on the reduction of the ketone and benzoylation of the mixture of alcohols.

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

    Homogeneous catalysts work by forming an intermediate compound with one or more of the reactants, which then breaks down to form the products and reform the catalyst - so none of the catalyst is used up in the reaction. The step to form the intermediate has a lower activation energy than the uncatalysed reaction (see fig.

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