Solutions and Solubility Answers

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Sample

The graph below shows how solubility changes with temperature.Which two solutions have similar solubilities at 40°C?

Na2SO4 and NaCl

Na2HAsO4 and NaCl

Na2HAsO4 and Na2SO4

Ba(NO3)2 and Ce2(SO4)3 • 9H2O

Which is true about dissolving a polar substance in water?

The solvent particles are all nonpolar molecules.

The solute particles are carried into the solution.

The solute particles have no attraction for the solvent molecules.

The solute particles are very different from the solvent molecules.

most likely

a sugar cube with stirring at 5°C

a sugar cube without stirring at 15°C

sugar crystals with stirring at 15°C

sugar crystals without stirring at 5°C

Which refers to the amount of a solute that will dissolve in a given volume of solvent at a given temperature and pressure?

solubility

supersaturated

dissolution rate

concentrated

best

supersaturated

unsaturated

diluted

saturated

greatest

high pressure and high temperature

high pressure and low temperature

low pressure and high temperature

low pressure and low temperature

Which is true about the dissolving process in water?

Nonpolar solutes dissolve easily in water.

Solute molecules surround water molecules.

Molecules or ions of a solute spread throughout the water molecules.

Water molecules are repelled by solute ions at the surface of the solute.

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