Solubility Questions

If a crystal added to an aqueous solution causes many particles to come out of the solution, the original solution was_____.

• unsaturated
• saturated
• an emulsion
• supersaturated

What is the concentration of a solution?

• a measure of the number of moles of solute dissolved
• a measure of the amount of solute in a specified quantity of solvent
• a measure of the volume of solvent used to make the solution
• a measure of the amount of solute that can be dissolved

Tags

NGSS.HS-PS1-5

Which of the following substances is less soluble in hot water than in cold water?

• CO_2
• NaCl
• NaNO_3
• KBr

If the percent (mass/mass) for a solute is 4% and the mass of the solution is 200 g, what is the mass of solute in the solution?

• 8.0 g
• 50 g
• 80 g
• 800 g

If 2.0 mL of 6.0 M HCl is used to make a 500.0 mL aqueous solution, what is the molarity of the dilute solution?

• 0.024 M
• 0.24 M
• 0.30 M
• 0.83 M

The volume of 6.00 M HCl needed to make 319 mL of 6.80 M HCl is_____.

• 0.128 mL
• 7.8 mL
• 281 mL
• 362 mL

What mass of Na₂SO₄ is needed to make 2.5 L of 2.0 M solution?

• 178 g
• 284 g
• 356 g
• 710 g

To increase the solubility of a gas at a constant temperature from 1.20 g/L, at 1.4 atm, to 2.3 g/L, the pressure would have to be increases to _______.

• 0.37 atm
• 0.7 atm
• 1.37 atm
• 2.7 atm

What is the maximum amount of KCl that can dissolve in 200 g of water? (Solubility of KCl is 34g/100 g water at 20 degrees)

• 17 g
• 34 g
• 68 g
• 6800 g

Which of the following usually makes a substance dissolve faster in a solvent?

• agitating the solution
• increasing the particle size of the solute
• lowering the temperature
• decreasing the number of particles