Solution Concentrations and Acids & Bases

What is the molarity of a solution that contains 35.0 g of KOH in 750 mL of solution?

• 0.83 M

• 47 M

• 0.47 M

• 8.3 M

What is the molarity of a solution that contains 64.20 g of sodium chloride (NaCl) dissolved in 750.0 mL solution?

• 0.8560 M

• 1.099 M

• 1.465 M

• 1.213 M

How many grams of MgCl₂ are needed to prepare 350. mL of 0.650 M MgCl₂ solution?

• 0.228 g

• 21.66 g

• 0.00239 g

• 2.39 g

How many milliliters of a 3.0M H₂SO₄ stock solution would you need to prepare 250.0 mL of 0.15M H₂SO₄? Use the dilution equation. M₁V₁ = M₂V₂

• 5000 mL

• 12.5 mL

• 112.5 mL

• 25.0 mL

What is the pH of a solution with a hydrogen ion concentration of 1.5 x 10^-5 mol/L?

• 4.8

• 2.0

• 9.2

• 6

What is the pH of a solution with a hydroxide ion concetration of 1.0 x 10^-4?

• 1

• 4

• 8

• 12

A student prepares 1.0 m solutions of each of these compounds and then measures the freezing point of each solution. Which will have the lowest freezing point?

• NaCl

• Mg(OH)₂

• C₆H₁₂O₆

• AlBr₃

What is the pH of a 0.75 M solutionof KOH?

• 13.8

• 0.12

• 1.3

• 7

Which substance is an Arrhenius base?

• NaCl

• CH₃OH

• CH₃Br

• CaOH

Identify the acid and its conjugate base for this equation: HClO₄ (aq) + H₂O (l) ⇄ H₃O⁺ (aq) + ClO₄^- (aq)

• HClO₄ and ClO₄^-

• H₂O and ClO₄^-

• HClO_{4 and} H₂O

• H₃O⁺ and ClO₄^-