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Acids/Bases/Salts -
Theory and Rxns

Examples of
Multiple Choice Questions

Arrhenius defined an acid as:
(a) a species that can donate a proton.
(b) a species that can accept a proton.
(c) a source of OH- ions in water.
(d) a sourse of H+ ions in water.
(e) a species that can accept a pair of electrons.

In the Bronsted-Lowry system, a base is defined as:
(a) a proton donor.
(b) a hydroxide donor.
(c) an electron-pair acceptor.
(d) a water-former.
(e) a proton acceptor.

In the equation: HF + H2O H3O+ + F-
(a) H2O is a base and HF is its conjugate acid.
(b) H2O is an acid and HF is the conjugate base.
(c) HF is an acid and F- is its conjugate base.
(d) HF is a base and H3O+ is its conjugate acid.
(e) HF is a base and F- is its conjugate acid.

For the system shown here: HOBr + OH- H2O + OBr-
Bronsted would classify the base species as:
(a) OH- and HOBr
(b) H2O and OH-
(c) OBr- and OH-
(d) OBr- and HOBr
(e) H2O and HOBr

Which is the strongest acid?
(a) HClO4
(b) HClO3
(c) HClO2
(d) HClO
(e) HF

Which of these species is probably the weakest acid?
(a) HCl
(b) H3PO4
(c) H2PO4-
(d) HPO42-
(e) HNO3

Consider the neutralization reactions between the following acid-base pairs in dilute aqueous solutions:
(1) CH3COOH + NaOH
(2) HNO3 + Mg(OH)2
(3) H3PO4 + Ba(OH)2
(4) HCl + KOH
(5) H2CO3 + LiOH

For which of the reactions is the net ionic equation: H+ + OH- H2O ?

(a) 1, 3
(b) 1, 4, 5
(c) 2, 3
(d) 4
(e) 1

Which one of the following represents the net ionic equation for the reaction of nitric acid with aluminum hydroxide?
(a) 3H+ + Al(OH)3 Al3+ + 3H2O
(b) 3HNO3 + Al(OH)3 Al(NO3)3 + 3H2O
(c) HNO3 + OH- NO3- + H2O
(d) H+ + OH- H2O
(e) 3NO3- + Al3+ Al(NO3)3

Which one of the following is an amphoteric metal hydroxide?
(a) KOH
(b) Ba(OH)2
(c) Pb(OH)2
(d) LiOH
(e) Mg(OH)2

According to the Lewis theory, a base _____ .
(a) is a proton acceptor.
(b) is a proton donor.
(c) makes available a share in a pair of electrons.
(d) produces OH- ions in aqueous solution.
(e) accepts a share in a pair of electrons.


1. (d) 2. (e) 3. (c) 4. (c) 5. (a) 6. (d) 7. (d) 8. (a) 9. (c) 10. (c)

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To report any corrections, please e-mail Dr. Wendy Keeney-Kennicutt.