Acids & Bases

Which of the following is false for a base?

• tastes bitter

• feels slippery

• reacts with metals to form H₂

• turns red litmus blue

Which of the following is an Arrhenius base?

• KOH

• H₂CO₃

• NaCl

• NH₃

An acidic solution:

• has [H3O+]=1x10^-14M

• has pOH < 7

• has pOH >7

• turns red litmus blue

If a solution has a [H₃O⁺] of 1 x 10^-3M, then the [OH^-] would be:

• 1x10^-3 M

• 1x10^-14 M

• 1x10^-11 M

• 1x10^-7 M

The conjugate acid of HPO₄ ^2- is:

• H₃PO₄

• H₂PO₄^-

• PO₄^3-

• H₄PO₄⁺

Which acid would have the highest percent ionization in water?

• boric acid

• hydrofluoric acid

• nitrous acid

• ethanoic acid

A solution turns yellow in chlorophenol red and yellow in methyl orange. The pH of the solution could be:

• 5.4

• 4.2

• 4.8

• 7.0

Determine the pH of a 0.120 M solution of Ba(OH)₂.

• 0.240

• 4.17x10^-14

• 0.620

• 13.380

Calculate the K_a of a weak acid if a 0.340M solution has a pH of 3.52

• 3.02x10^-4

• 2.7x10^-7

• 10.48

• 9.12x10^-8

Which acid would produce 5.0M H₃O⁺ ions in solution?

• 5.0M HF

• 5.0M H₂S

• 5.0M NH₃

• 5.0M HBr