21
QuizMultiple Choice

Elements, Compounds, and Mixtures — Unit test

Question 21 • SVHS Chemistry 1 $FA

A solid precipitate is formed from the reaction of lead nitrate and sodium chromate. What would be the best method to separate this solid from the solution?

Answer
A
distillation
B
evaporation
C
filtration
D
sorting

Explanation

Lead nitrate reacts with sodium chromate to form solid lead chromate, an insoluble precipitate, in a solution containing dissolved sodium nitrate. Filtration separates an insoluble solid from a liquid: the solid stays on the filter while the solution passes through. Distillation and evaporation are used to separate dissolved substances, and sorting is not suitable for a precipitate mixed with liquid.

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