Chemistry Quiz

Use the solubility table to answer the question. Which pair of solutions will produce a precipitate when they undergo a double replacement reaction?

• 1. magnesium sulfate and zinc (II) nitrate

• silver (I) nitrate and potassium phosphate

• sodium phosphate and lithium chloride

• calcium chloride and sodium sulfate

Use the solubility table to answer the question. What is the precipitate that forms when a solution of KCl is mixed with a solution of Pb(NO3)2?

• 1. KNO3

• PbCl2

• KCl

• Pb(NO3)2

Which unit can be used to express solution concentration?

• J/g

• L/mol

• mol/L

• mol2/L•s

How can you increase the concentration of a solution?

• Add solute

• Add solvent

• Pour out some of the solution

• You cannot decrease the concentration

If you have 4 moles of glucose in 2 L of solution, what is the concentration of the solution?

• 0.5 M

• 2 M

• 4 M

• 8 M

Explain how you would prepare a solution of salt water, NaCl(aq), with a molarity of 0.50 M.

• Add water to 0.50 grams of salt to make 1.0 L of solution

• Add water to 58 grams of salt to make 1.0 L of solution

• Add water to 29 grams of salt to make 1.0 L of solution

• Add water to 117 grams of salt to make 00.50 L of solution.

Which of the following is the correct net ionic equation for the reaction?

• 3Ca(NO3)2(aq) + 2Na3PO4(aq) → Ca3(PO4 )2(s) +6 NaNO3(aq)

• 6Na+(aq) + 2PO43-(aq) → 2Na3PO4(aq)

• Ca2+(aq) + 2NO3-(aq) → Ca(NO3)2 (aq)

• 3Ca2+(aq) + 2PO43-(aq) → Ca3(PO4 )2(s)

• Na+(aq) + NO3-(aq) → NaNO3(aq)

How many moles of sodium nitrate are in 0.65 L of a 0.28 M NaNO3 solution?

• 0.18 mol

• 0.43 mol

• 2.3 mol

• 18 mol

What is the molarity of a solution containing 45 g of lead (II) nitrate, Pb(NO3)2, in 1.0 L of solution?

• 0.07 M

• 0.14 M

• 0.33 M

• 3.0 M