Unit 6 Test, Advanced Chemistry

Which of the following shows the correct DISSOLUTION reaction for BaCl₂, ie what happens to BaCl₂ when you add it to water?

• Ba²⁺_(aq) + Cl^2-_(aq) --> BaCl_2(s)

• Ba²⁺_(aq) + 2Cl^-_(aq) -->BaCl_2(s)

• BaCl_2(s) --> Ba²⁺_(aq) +Cl^2-_(aq)

• BaCl_2(aq)-->Ba²⁺_(aq) +2Cl^-_(aq)

• BaCl_2(s) --> Ba²⁺_(aq) +2Cl^-_(aq)

Which of the following substances would likely dissolve in water?

• CaSO₄

• AgCl

• Na₂SO₄

• none of the above would dissolve in water

What precipitate forms when you mix lead (II) nitrate with sodium chloride?

• sodium nitrate

• sodium lead

• lead (II) chloride

• chloride nitrate

Which is the correct NET IONIC EQUATION for the reaction of AgNO₃ and CaCl₂?

• Ca²⁺_(aq) +2Cl^-_(aq) --> CaCl_2(s)

• Ag + Cl --> AgCl

• Ag⁺_(aq) + Cl^-_(aq) -->AgCl_(s)

• Ag⁺ + Ca²⁺ -->Ag₂Ca_(s)

Which of the following does NOT form a precipitate?

• Pb(NO₃)_2(aq) + 2KI_(aq) -->

• AgNO_3(aq) + Na₂S_(aq) -->

• Sr(NO₃)_2(aq) + K₂SO_4(aq) -->

• Pb(NO₃)_2(aq) + AgNO_3(aq) -->

0.450 moles of NaCl are dissolved in 95.0 mL of water. Calculate the molartiy of the NaCl solution.

• 0.0047 M

• 0.21 M

• 2.1 M

• 4.7 M

Molarity is measured in...

• mol/kg

• mol/mL

• mol/L

• mol/g

Which of the following best describes chicken noodle soup?

• element

• mixture

• compound

• solution

A solution that contains a large amount of solute is best described as

• unsaturated

• saturated

• dilute

• weak

Although a meteorite might travel millions of kilometers to reach Earth, the particles of iron in a meteorite are identical to the particles of iron in an iron skillet because iron is a

• mixture

• compound

• solution

• element