Unit 10: Acids & Bases Review

(8B) Solution A has a pH of 3 and solution Z has a pH of 6. Solution A has a

• 100 times greater [H⁺]

• 1000 times greater [H⁺]

• 100 times lower [H⁺]

• 1000 times lower [H⁺]

(8A) An Arrhenius base yields which ion as the only negative ion in an aqueous solution

• hydride ion

• hydronium ion

• hydroxide ion

• hydrogen ion

(8D) Which reactants form the salt CaSO4 in a neutralization reaction?

• H₂S and Ca(ClO₄)₂

• SO2 and CaO

• H₂SO₃ and Ca(NO₃)₂

• H₂SO₄ and Ca(OH)₂

(8E) What volume of 0.500 M HNO₃(aq) must completely react to neutralize 100.0 mL of 0.100 M KOH(aq)?

• 10.0 mL

• 20.0 mL

• 50.0 mL

• 500. mL

(8C) What color is methyl orange in a solution with a pH of 5?

• red

• orange

• blue

• yellow

(8A) One acid-base theory states that an acid is

• an H^- donor

• an H⁺ donor

• an H^- acceptor

• an H⁺ acceptor

(8B) Which of these pH numbers indicates the strongest acid?

• 1

• 3

• 8

• 12

(8B) Which pH change represents a hundredfold increase in [H₃O]⁺

• pH 3 to pH 2

• pH 7 to pH 9

• pH 5 to pH 3

• pH 14 to pH 13

(8B) The pH of pond water is 9.0. After a spill, its [H⁺] increases 1000 fold. The new pH is

• 12

• 6

• 7

• 5

(8B) As pH decreases,

• [H⁺] increases only

• [H⁺] decreases only

• [H⁺] increases and [OH^-] decreases

• [H⁺] decreases and [OH^-] increases