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

Testing For Non-Reducing Sugars

Extracts from this document...


Testing For Non-Reducing Sugars Aim: To test for non-reducing sugars 8 solutions of Glucose and compare their colour change compared with 3 different types of everyday liquids that contain sugar content. Equipment: The Equipment that will be needed for this experiment is: * Spatula * A sample to test: the sucrose solution * Test tube holder * 1 mol per dm hydrochloric acid, sodium hydrogen carbonate * Benedict's solution * Pipette * Water Bath tank * Eye protection Method: For this experiment I am going to: * Measure 5cm of Sucrose Solution into a boiling tube and add 1cm of dilute Hydrochloric Acid (HCl) ...read more.


Add small amounts of Sodium Hydrogen carbonate until the fizzing eventually stops. * Now add 3cm of Benedict's Solution and return the rack with the tubes into the boiling water bath. Leave for 8 minutes, and then remove the rack with the tubes inside. A reaction should have taken place and a Colour Change should be apparent. Results: After completing the experiment, I took down the colour changes in each of the tubes that contained a specific solution of Glucose and then compared it with a Sample to test the Sucrose Solution. ...read more.


Introduction Benedict's test uses copper (II) sulphate. This reagent is used as a general test for detecting reducing sugars. If the saccharide is a reducing sugar, it will reduce the copper (II) ions to copper (I) oxide, and form a red precipitate. However, some saccharides need to be split and neutralised in order to detect their reducing sugars. Risks Hydrochloric acid is very poisonous and corrosive if spilt wash affected area immediately. Sucrose is the only common example of a non-reducing sugar. Heating Sucrose with hydrochloric Acid Hydrolyses the Sucrose into its two constituent monosaccharides, Glucose and Fructose, which are both reducing sugars and so react with the Benedict's Solution ...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. Are all Saccharides Reducing Sugars

    it stops fizzing, After it has finished fizzing we then add a dropper full of benedict's solution and place the test tube back in the water bath for 2 minutes, then we take the

  2. The action of amylase and pectinase in varying amounts when clarifying cloudy apple juice.

    I will also mark the 11cm� level up to which I have poured the distilled water. The amylase arrives as a powder and so I am going to mix it with water to make a 1% amylase solution. I will do one pilot experiment with everything at room temperature and

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