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Making a 1% solution of glucose.

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Introduction

Making a 1% solution of glucose. Introduction. A standard solution can be an important solution and a useful solution to use, as it is a known solution, the value is also known and that means that the solutions can be tested and be compared against unknown sources to test with and to identify its value. A standard solution will be used in a situation when the scientists have an unknown solution where they will test it to find out what it will be, Aim of activity. Our aim is to make up a standard 1% solution of glucose in water using 1g glucose and 100ml water and use this as a control solution. Materials and method. Materials. 100ml conical glass Balancing scale Measuring boat Squeezy bottle Stirring rod Bunsen burner Spatula Method. Method for making the solution. 1. ...read more.

Middle

Method for testing the solution. 1. Place a small amount of the 1% solution and add a few drops of benedict's solution, place the test tube in a beaker of heated water to help the reaction. 2. Collect the solution A+B and pour a small amount of each solution into separate test tubes and pour a few drops of benedict's solution into the mixture. 3. Place the test tubes into the heated water and wait for any changes. 4. If any changes note them down. Results. The control solution changed an orange colour, which means that the glucose was present and that now we be looking for in other tests. Source B stayed the same, which meant that no glucose was present and source A changed colour that shows that the glucose was present Conclusion. ...read more.

Conclusion

While we were pouring the water into the flask we went over the 100ml mark and that spoiled the mixture because we had too much of water. When we were heating the benedict's solution the Bunsen burner took a long time to heat the mixture and it took a long time to change Alternative method. There were a few alternative method we could have used they were; 1.cleaning sticks (clinistix) = the cleaning sticks were accurate because it was able to tell you how much glucose you had inside of you. This can be tested with the fluids inside of you. 2. Volumetric flask = this was used to measure the volume of the solution more accurately. We could have used the flask but there was the lack of kit and that there was not enough equipment to go around with. ...read more.

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