Solution Stoichiometry

If 0.5 mol of NaCl is dissolved in 1 liter of water, what is the molarity of the solution?

• 0.1 M

• 0.5 M

• 1 M

• 2 M

What is molarity (M)?

• The number of grams of solute per liter of solution

• The number of moles of solute per liter of solution

• Number of solute particles per liter of solution

• Volume of solution in liters

If 58.5 grams of NaCl is dissolved in water until the volume reaches 2 liters, what is the molarity of the solution? (Ar Na = 23, Cl = 35.5)

• 0.25 M

• 0.5 M

• 1 M

• 2 M

What is a “limiting reagent” in a reaction?

• The substance that has the highest amount in the reaction

• The substance that does not participate in the reaction

• The substance that is formed as a result of the reaction

• The substance that is used up first in the reaction

If 100 mL of 1 M HCl solution is reacted with 1 M NaOH, the volume of NaOH needed for the solution to become neutral is?

• 200 mL

• 150 mL

• 100 mL

• 50 mL

How many moles of Na₂SO₄ are formed if 1 mole of NaOH reacts completely with H₂SO₄?

• 0.5 mol

• 1 mol

• 2 mol

• 3 mol

In the reaction between Pb(NO₃)₂ and NaCl, the product that precipitates is?

• Pb(NO₃)₂

• NaNO₃

• NaCl

• PbCl₂

In electrolyte solutions, substances that function as spectator ions are?

• Ions that react to form new compounds

• Ions that remain in solution without changing

• Ions that become limiting reagents

• Ions that bind to form neutral molecules

If 100 mL of 0.1 M AgNO₃ solution is mixed with 100 mL of 0.1 M NaCl solution, how many grams of AgCl precipitate is formed? (Ar Ag = 108, Cl = 35.5)

• 1.085 grams

• 1.100 grams

• 1.435 grams

• 2 grams

Examples of double decomposition reactions are?

• Fe + HCl → FeCl₂ + H₂

• Na₂CO₃ + HCl → NaCl + CO₂

• AgNO₃ + HBr → AgBr + HNO₃

• Pb(NO₃)₂ + KI → PbI₂ + KNO₃