Spectrophotometric analysis of dextrose solution

Spectrophotometric analysis of dextrose solution -...

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Beginning question: What is the concentration of dextrose in the solution? Safety In this lab it is important to wear goggles and gloves. The use of benedict’s solution will occur in this lab and it is harmful when it comes into contact with the skin. Procedure: An amount of dextrose was weighed and added to volumetric flask with about 25ml of distilled water. Weight of dextrose= 107.8 mg Swirl the flask until the dextrose has completely dissolved. You will need seven clean test tubes label them 1-6 and label one unknown. Add the following to each test tube: Test tube # mL dextrose solution mL distilled water mL Benedict’s solution 1 0.00 5.00 1.00 2 0.50 4.50 1.00 3 1.00 4.00 1.00 4 1.50 3.50 1.00 5 2.00 3.00 1.00 6 2.50 2.50 1.00 Unknown 3.00 2.00 1.00 Mix the contents in the test tubes by inverting the test tubes, be sure to put a clean stopper on top of the test tube to prevent spilling or losing any of the solution. Remove the stoppers on the test tubes and heat the test tubes in water over a hot plate for 25-30 min. After the
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Spectrophotometric analysis of dextrose solution -...

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