Solutions

Based on the solubility chart, which of the listed salts is the most soluble at 40°C?

• KCl
• KClO₃
• KNO₃
• Pb(NO₃)₂

Tags

NGSS.HS-PS1-5

What conclusion can be made using this solubility curve?

• Decreasing temperatures always increases solubility 
• Increasing temperatures always increases solubility
• Increasing temperatures usually increases solubility
• Temperature has no affect on solubility

Tags

NGSS.HS-PS1-5

 Which compound listed demonstrated the GREATEST increase of solubility as a result of an increase in temperature?

• KNO₃
• KCl
• NaCl
• KClO₃

Tags

NGSS.HS-PS1-5

Consider the salts represented on the solubility curves displayed as line graphs. In all cases the salts are which part of an aqueous solution?

• precipitate
• solvent
• solute
• concentrate

Tags

NGSS.HS-ESS2-5

What does this solubility curve show?

• Solubility increases as temperature increases
• Solubility decreases as temperature decreases
• Solubility decreases as concentration increases
• Solubility is not affected by temperature

Tags

NGSS.HS-PS1-5

Which of the following does not increase the rate of dissolving a solid in a liquid?

• stirring the solution
• crushing up the solute
• raising the temperature of the water
• lowering the temperature of the water

Tags

NGSS.HS-PS3-4

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

• 0.156 M
• 0.709 M
• 0.353 M
• 1.41 M

At 40^oC which salt is least soluble?

• KClO₃
• NaCl
• KI
• KNO₃

Tags

NGSS.HS-PS1-3

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

Tags

NGSS.HS-PS1-5

As the pressure decreases the solubility of a gas in a liquid

• increases
• decreases