Chemistry: Matter and Change

Chapter 18: Acids and Bases

Chapter Test Practice

1
Which of the following is a strong base?
A)NH3
B)HCO3-
C)NaOH
D)HCOOH
2
Under what condition is the OH- ion concentration in water expected to be zero?
A)in a solution of strong acid
B)in a solution of strong base
C)in a solution of weak base
D)never
3
A base that dissociated entirely into metal ions and hydroxide ions is known as a ________.

NaOH(s) yields Na+(aq) + OH-(aq)
A)strong base
B)weak base
C)concentrated base
D)dilute base
4
Ammonia is a weak base. Which of the following gives the correct base ionization constant expression?

NH3(aq) + H2O(l) yields NH4+(aq) + OH-(aq)
A)Kb = [NH4+]/[NH3]
B)Kb = [OH-]/[NH3]
C)Kb = [NH3]/[NH4+]
D)Kb = [NH4+][OH-]/[NH3]
5
Calculate the pH of a solution that has a [OH-] = 2.50 x 10-4M.
A)0.4
B)3.6
C)-3.6
D)10.4
6
Calculate the Ka for a 0.10 M solution of the weak acid HCN; the pH of the solution is 5.104.

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/007874637x/514714/fig18_15.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (47.0K)</a>
A)6.2 x 10-11
B)6.2 x 10-10
C)6.2
D)-6.2 x 10-11
7
Kw is the product of ________.

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/007874637x/514714/fig18_13.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (27.0K)</a>
A)[H2O][H+]
B)[H2O][H2O]
C)[H+][OH-]
D)[H2O][OH-]
8
Which of these reactions has the net ionic equation shown below?

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/007874637x/514714/fig18_20.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (31.0K)</a>
A)HCl(aq) + NaOH(aq) yields NaCl(aq) +H2O(l)
B)KCl(aq) +AgNO3(aq) yields AgCl(s) +KNO3(aq)
C)2Na(s) +2H2O(l) yields H2(g) +2NaOH(aq)
D)Ba(NO3)2 + Na2SO4 yields 2NaNO3(aq) +BaSO4(s)
9
What does a color change indicate in a titration?

<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/007874637x/514714/fig18_22.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (113.0K)</a>
A)The pH of the solution is 7.00.
B)The equivalent point has been reached.
C)The solution is buffered.
D)The solution is neutral.
10
17.5 mL of 0.1000 M NaOH was required to neutralize 25.0 mL of HCl. What was the molarity of the HCl?
A)3.00 M HCl
B)14.3 M HCl
C)0.0700 M HCl
D)0.0300 M HCl
Glencoe Online Learning CenterScience HomeProduct InfoSite MapContact Us

The McGraw-Hill CompaniesGlencoe