Solubility Quiz

Which of the following it TRUE concerning solutions?

• Solutions are mechanical mixtures that are not uniform throuhgout

• The properties of a solution are the same throughout the entire solution

• Solutions exist as more than one phase or state at a time

• The largest component of a solutions is the solute

30g of sodium chloride is mixed with 100mL of water to form a solution. The sodium chloride is referred is as the

:

• solution

• solvent

• solute

A crystal of sodium thiosulphate is dropped into a beaker containing a supersaturated solution of sodium thiosulphate. What will you see?

• No observable change will occur

• The solution will change colour

• The added crystal will dissolve

• The added crystal will grow

Solubility is defined a:

• The minimum number of grams of solute that can dissolve in a given amount of solvent to produce an unsaturated solution at a specified temperature.

• The maximum number of grams of solvent that can dissolve 100g of solute at a specified temperature.

• The ability of a solute to dissolve into a solvent at a specified temperature.

• The maximum number of grams of solute that can dissolve in a given amount of solvent at a specified temperature

Which of the following compounds would be able to dissolve 160g of solute in 200g of water at 50°C

• KNO₃

• NaNO₃

• NH₄Cl

• KI

10 g of NaCl (molar mass 58.44g/mol) was made mixed with 250mL of water. What is the molar concentration of this solution?

• 0.04 M

• 40 M

• 0.684 M

• 0.000584 M

An acid has a [H⁺] of 0.00481. What is the pH of the acid?

• 1.0

• 2.3

• 4.81

• 7

Using your solubility table choose all of the following that are insoluble compounds.

• KNO₃

• Mg(OH)₂

• AgCl

• NaC₂H₃O₂

• (NH₄)₂SO₄

A very large piece of zinc is placed in a beaker containing 50mL of 0.45 g/mol CuSO₄, the reaction proceeded by the following balanced formula:

Zn + CuSO₄ --> ZnSO₄ + Cu

How much copper was formed?

• 1.43 g

• 0.0225g

• 9g

• 0.00035g

A student performed a titration on 50mL of an unknown concentration of HCl. They titrated 12.5 mL of a 1.5 mol/L solution of NaOH. What was the concentration of the unknown acid?

• 0.375 mol/L

• 0.0375 mol/L

• 0.166 mol/L

• 1.6 mol/L