Analytical chemistry Essays
Chemistry Which test tube represents the control?
Your Answer
The one with water. When protein molecules are present, Beirut Reagent reacts with the protein to form a purple color. Tube number one is the control tube because it is distilled water and has no protein; the tube has no color. Which test tube contained the most test substance?
Amylase D. Other than the control, which test tube contained the least test substance? Did the results agree with your initial hypothesis in every case?
Yes F. Why or why to? Starches and sugars are helped by protein enzymes and Amylase is an enzyme.
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If the color change is not as you expected, what might be the reasons? Contamination H. Add another 5 drops of Beirut Reagent to each test tube and stir as before.
Do your results change? What is the purpose of this exercise? To use color to detect if substances have protein since Beirut reagent would react with a protein to form a purple color B.]
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