# How to Make Liquid Glucose

Written by allan robinson
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Glucose is a simple sugar also known as blood sugar, corn sugar and grape sugar. Living cells use it as a source of energy and it's one of the primary products of photosynthesis. Pure glucose is a solid at room temperature but you can make a liquid solution of glucose by adding water. This is a common experiment in high school chemistry laboratories.

Skill level:
Moderate

• Glucose
• Water
• Scale
• Beaker

## Instructions

1. 1

Determine the concentration of the glucose solution you wish to make. The concentration of a glucose solution is the mass of the glucose in the solution divided by the total mass of the solution. Assume that you wish to make a 24 per cent glucose solution for this example.

2. 2

Select the mass of the glucose solution you wish to make. This will be the total mass of the glucose and the water. You'll make 100 grams (g) of a 24 per cent glucose solution in this example.

3. 3

Measure the mass of glucose that you'll need. You know that x/t = c where x is the mass of the glucose, t is the total mass of the solution and c is the desired concentration. Therefore, x = tc = (100 g)(0.24) = 24 g for this example. Use a scale to weigh 24 g of glucose.

4. 4

Calculate the mass of the water to use. Subtract the mass of glucose from the total mass of the solution. The equation 100 g solution -- 24 g glucose = 76 g water shows that you need to pour 76 g of water into the beaker.

5. 5

Add 24 g of glucose to 76 g of water and stir thoroughly until the glucose is completely dissolved. This will provide 100 g of a 24 per cent solution of glucose.

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