Solutions Test

According to Reference Table G, which solution is saturated at 30°C?

• 12 grams of KClO₃ in 100 grams of water

• 12 grams of KClO₃ in 200 grams of water

• 30 grams of NaCl in 100 grams of water

• 30 grams of NaCl in 200 grams of water

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

What is the mass of NH₄Cl that must dissolve in 200 grams of water at 50.°C to make a saturated solution?

• 26g

• 42g

• 84g

• 104g

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

When calcium chloride is dissolved in water, to which end of the adjacent water molecules will a calcium ion be attracted?

• the oxygen end, which is the negative pole

• the oxygen end, which is the positive pole

• the hydrogen end, which is the negative pole

• the hydrogen end, which is the positive pole

Which sample of matter is classified as a solution?

• H₂O(s)

• H₂O(l)

• CO₂(g)

• CO₂(aq)

Based on Reference Table F, which of the following saturated solutions would be the least concentrated?

• sodium sulfate

• potassium sulfate

• copper (II) sulfate

• barium sulfate

Which compound becomes less soluble in water as the temperature of the solution is increased?

• HCl

• KCl

• NaCl

• NH₄Cl

One hundred grams of water is saturated with NH₄Cl at 50°C. According to Table G, if the temperature is lowered to 10°C, what is the total amount of NH₄Cl that will precipitate?

• 5g

• 18g

• 34g

• 52g