Solutions - Portion A

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During a lab activity, you dilute 45mL of 8.5M HCl solution to a final volume of 120mL. What is the new HCl concentration

• 2.3 M
• 3.2 M
• 5.1 M
• 23 M

A 25.0mL solution of 0.900M HCl is diluted to a final volume of 55.0mL. What is the new concentration?

• 0.321 M
• 0.409 M
• 0.450 M
• 0.900 M

From the problem a 25.0mL solution of 0.900M HCl is diluted to a final volume of 55.0mL, the solution is left out and 5.00mL of water evaporates. What is the new concentration?

• 0.321 M
• 0.409 M
• 0.450 M
• 0.900 M

Consider a solution containing 3.12g of CuF2 in 150.0mL of solution, what is the molar concentration of the solution?

• 0.054 M
• 0.109M
• 0.205 M
• 0.234 M

Consider a solution containing 3.12g of CuF2 in 150.0mL of solution (problem above), if 100.0mL of water is added to the above solution, what would be the resulting concentration?

• 0.054 M
• 0.123M
• 0.205 M
• 0.234 M

Which of these salts is the most soluble at 90ºC?

• Sodium carbonate
• Magnesium chloride
• Potassium chloride
• Copper sulfate

A concentrated solution is one that contains a lot of ______ and little _________.

• suspension, solvent
• solute, solvent
• solvent, solute
• solute, suspension

Which one of the following is not an example of a suspension?

• Spoon of sugar dissolved in cup of coffee
• Glass of milk
• Milk of magnesia
• Muddy water

The solubility of sodium chloride in 100 grams of water at 20ºC is 36 grams. Which one of the following statements is incorrect?

• 18 grams of sodium chloride will dissolve in 50 grams of water at a temperature of 20ºC.
• Cooling the water will cause less sodium chloride to dissolve.
• When the water is heated gently, more sodium chloride will dissolve.
• The solubility of sodium chloride at 15ºC is 36 grams of sodium chloride per 100 grams of