solutions review

Front

Which of the following is a heterogeneous mixture: water, Salt dissolved in water, chex mix, air?

Back

chex mix

Front

Which of the following does not increase the rate of dissolving a solid in a liquid? Options: stirring the solution, crushing up the solute, raising the temperature of the water, lowering the temperature of the water

Back

lowering the temperature of the water

Front

Why will sugar dissolve in water?

Back

sugar has a similar polarity to water

Front

Calculate the molarity of a solution prepared by dissolving 78.2 grams of CaCl₂ in 500.0mls of water.

Back

1.41 M

Front

How many grams of ammonium chloride are needed to make a saturated solution at 80^o C? Options: 50 grams, 80 grams, 65 grams, 75 grams

Back

65 grams

Front

At 40^oC which salt is least soluble? Options: KClO₃, NaCl, KI, KNO₃

Back

KClO₃

Front

What kind of solution is made from 50 grams of KNO₃ at 40^oC? Options: saturated, unsaturated, supersaturated

Back

unsaturated

Front

Which will dissolve the slowest: powdered sugar in hot water, powdered sugar in cold water, sugar cubes in hot water, sugar cubes in cold water?

Back

sugar cubes in cold water

Front

Which solution made from one mole of the following solutes in 100.0 mls of water has the lowest freezing point? Options: MgBr₂, Al₂(CO₃)₃, NH₄C₂H₃O₂, N₂O₄

Back

Al₂(CO₃)₃

Front

A metal solution is a(n)

Back

alloy