Question

Prepare750ml of 10%glucose solution

Answer 1

Answer:

To work out how much glucose you need to make a solution of a given percent, multiply (mass/volume) by volume, bearing in mind that 1 g in 100 ml is a 1 percent solution. For this example, if you want to make a total solution of 500 ml of 20 percent glucose, multiply (20/100) by 500. The answer is 100, so you need 100 g of powdered glucose. (If you were making a 10 percent glucose solution, the calculation is (10/100) x 500, and the answer is 50 g).

Insert a stir bar and sit the beaker on a hot plate. Turn on the heat and stir functions. Let the water heat up, but don't bring it to boiling point, as this will stop the glucose going into solution.

Stir the solution over heat for a few minutes. Glucose dissolves in water because the glucose molecules and the water molecules attract each other; glucose has lots of polar hydroxyl groups to hydrogen-bond with polar water molecules.

Explanation:

Your glucose solution is now ready.