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On first glance, table salt, $NaCl$, and ordinary table sugar, sucrose, ${C}_{12}{H}_{22}{O}_{11}$, appear very similar; both are white, crystalline solids.

Tasting of chemicals in the laboratory is never an option, so it has not been included.

Of the four possibilities listed below, which of the following would be a useful test to distinguish between table salt and sucrose?

A

Test electrical conductivity in the solid state.

B

Test to see if the solid is water soluble.

C

Test electrical conductivity in aqueous solution.

D

Test the pH of an aqueous solution of the substance.

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