Solutions Test

The molarity (M) of a solution is equal to the

• number of grams of solute/liter of solvent

• number of grams of solute/liter of solution

• number of moles of solute/liter of solvent

• number of moles of solute/liter of solution

The solubility of KClO₃(s) in water increases as the

• temperature of the solution increases

• temperature of the solution decreases

• pressure on the solution increases

• pressure on the solution decreases

What is the concentration of 10. moles of copper (II) nitrate in 5.0 liters of solution?

• 0.05M

• 2.0M

• 5.0M

• 10M

How many total moles of KNO₃ must be dissolved in water to make 1.5 liters of a 2.0 M solution?

• 0.50 mol

• 2.0 mol

• 3.0 mol

• 1.3 mol

A lab student adds salt to water.  What is the solvent?

• salt
• water
• the mixture that forms when salt and water are mixed

Tags

NGSS.MS-PS1-2

If a solution has the ability to dissolve more salt, it is classified as _______________.

• supersaturated
• saturated
• unsaturated
• monosaturated

The unit for molarity is ________ and it is used to describe the ____________ of a solution.

• Mole, Polarity
• Mole, Concentration
• M, Polarity
• M, Concentration

A student takes the moles of solute and divides by the liters of solution.  What is she solving for?

• Grams of solute
• mL of solution
• Molarity
• Grams/mole

Molality (m) = moles of solute / _________________________.

• kilogram of solvent

• kiloliter of solvent

• kilometer of solvent

• ounces of solvent

Molar mass of NaOH is ______________________

• 40 grams/mol

• 50 grams/mol

• 45 grams/mol

• 38 grams/nol