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You Have Two Bottles,each of Which Contains a White,crystalline Substance

Question 19

Multiple Choice

You have two bottles,each of which contains a white,crystalline substance.Your lab director tells you that one contains lactose and the other sucrose.Your job is to determine which bottle contains which sugar.Which procedure would you use?


A) Test both for solubility in water.Sucrose is very soluble;lactose is only minimally soluble.
B) Test for the ability to reduce Ag+.Only lactose will react.
C) Dissolve each in water and record the pH.Lactose is far more acidic than sucrose.
D) React each with bromine (Br₂) water.Only sucrose will react.

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