Solutions and Acid Base Review

Which change in pH represents a hundredfold increase in the concentration of hydronium ions in a solution

• pH 1 to pH 2
• pH 1 and pH 3
• pH 2 to pH 1
• pH 3 to pH 1

Which pair of formulas represents two compounds that are electrolytes?

• HCl and CH₃OH
• HCl and NaOH
• C₅H₁₂ and CH₃OH
• C₅H₁₂ and NaOH

A substance that conducts an electrical current when dissolved in water is called

• a catalyst
• a metalloid
• a nonelectrolyte
• an electrolyte

Which ion is the only negative ion present in an aqueous solution of n Arrhenius base?

• hydride ion
• hydrogen ion
• hydronium ion
• hydroxide ion

A student tested a 0.1 M aqueous solution and made the following observations:
~Conducts electricity
~turns blue litmus red
~reacts with Zn(s) to produce gas bubbles
Which compound could be the solute in this solution?

• CH₃OH
• LiBr
• HBr
• LiOH

Equal volumes of 0.1 M NaOH and 0.1 M HCl are thoroughly mixed.  The resulting solution has a pH closest to

• 5
• 7
• 3
• 9

If 5.0 milliliters of a 0.20M HCl solution is required to neutralize exactly 10. millilters of NaOH, which is the concentration of the base?

• 0.10 M
• 0.20 M
• 0.30 M
• 0.40 M

Which pH indicates a basic solution?

• 1
• 5
• 7
• 12

In which solution will thymol blue indicator appear blue?

• 0.1 M CH₃COOH
• 0.1 M KOH
• 0.1 M HCl
• 0.1 M H₂SO₄

Which reactants form the salt CaSO₄(s) in a neutralization reaction?

• H₂S and Ca(ClO₄)₂
• H₂SO₃ and Ca(NO₃)₂
• H₂SO₄ and Ca(OH)₂
• SO₂ and CaO