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

Hydrolysis of an Ester

Extracts from this document...


Hydrolysis of an Ester Aim: To hydrolyse the ester methyl benzoate to produce benzoic acid and to calculate the yield of the procedure and its melting point. Equation: C6H5COOCH3 + OH- C6H5COO- + CH3OH C6H5COO- + H+ C6H5COOH Apparatus: * 50cm3 round bottomed flask * Three 10cm3 measuring cylinders * Anti-bumping granules * Water filled condenser and rubber tubing * Bunsen burner * Stand and Clamp * Gauze and Tripod * 250cm3 and 100cm3 beakers * Spatula * Stirrer Procedure: 1. I measured 2.0cm3 of methyl benzoate, then 10cm3 of ethanol and 10cm3 of 2.0 moldm-3 sodium hydroxide into a 50cm3 round bottomed flask containing anti-bumping granules using three 10cm3 measuring cylinders. ...read more.


I heated the tube until the crystals disappeared and then placed the boiling tube in a beaker of cold water to cool. I filtered the product again under reduced pressure. 5. I placed the crystals on a piece of filter paper and left them to dry in the oven over night. 6. I weighed a small pot, then added the crystals to the pot and weighed it again. The pot had a mass of 15.92g and with the crystals had a mass of 16.92g, meaning the crystals had amass of 1.00g. 7. I sealed one end of a melting point tube using a Bunsen burner. I put a few crystals into the tiny tube and forced them to the bottom. ...read more.


Ethanol: This is highly flammable so I did not have a Bunsen burner alight while I was measuring it out. Hydrochloric acid (2.0 moldm-3): This concentration is irritant, so I wore eye protection and a lab coat at all times and handled the solution with extreme care. Sodium hydroxide (2.0 moldm-3): This concentration is corrosive and reacts violently with water. I, therefore, wore eye protection and a lab coat and did not mix it with water. Methyl orange: To avoid contact with skin I used a pipette to measure out the methyl orange indicator. General precautions: I wore a lab coat and goggles at all times. ?? ?? ?? ?? Oliver Fricker (CC) Chemistry Coursework Implementation Page1 ...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 Organic 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 Organic Chemistry essays

  1. Marked by a teacher

    What an ester is, how it is made, examples of esters, animal testing issues ...

    4 star(s)

    major reason * Results aren't reliable, as the cosmetic s may only be guaranteed to be safe for a small amount of time and in certain conditions and skin types. * Causes severe side allergic reactions to animals * Animals' skin may not react the same way as human skin

  2. Marked by a teacher

    Investigating the rate of reaction between magnesium and hydrochloric acid

    3 star(s)

    Infrequent collisions may happen as the dilute solution will not have many acid particles in it which means that it will take longer for a magnesium particle to find an acid particle and collide. Also because the water in the solution blocks the magnesium and acid from colliding and so

  1. Peer reviewed

    Growing Alum Crystals

    4 star(s)

    to prevent forces of repulsion between the ions of the same charge. Fast formation tends to form small crystals and slow formation tends to result in larger crystal (eChemistry Textbook, 2007) There are 8 main factors that affect crystal growth: 1.

  2. Esters. Esters are formed from an alcohol and carboxylic acid; this is an ...

    Cosmetics testing will also focus on testing for mutagenic effects. Despite even this array of testing, people do still suffer from reactions to cosmetics, which does indicate the challenges of drawing conclusions from testing that apply to the majority of the public.

  1. Investigation to compare quantitatively the concentration of reducing sugars in samples of fresh orange, ...

    This solution should be pale blue as it contained the most glucose and as a result most of the copper should be reduced. The solution should be of an increasing blue colour and so absorbance should increase as the glucose concentration decreases (a calibration curve should be drawn out).

  2. Physics - Delphi Automotives Needle Lift.

    Semiconductors give a small Hall Voltage (VH). This is due to the mobility of the contained electrons being greater than that of the holes. Metals generally show the same effect only on a smaller scale, with a lesser Hall voltage.

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