Mr. Shepherd’s Physical Science
Name:________________________________
Acid-Base Webquest
If you have not already done so, you should print off the Acid-Base Webquest Questions that are on a link
in the Webquest section of this website. Some of the questions you may be able to answer without
checking the websites if you remember concepts that we covered in class. There are links below that you
can visit to find information related to acids and bases.
Use this link to answer the following
questions: http://www.files.chem.vt.edu/RVGS/ACT/notes/Notes_on_acids_and_bases.html
Resources
General Acid-Base
Information
Acid-Base Tutorial &
Problems
Properties of Acids &
Bases
pH Information
Strong vs. Weak Acids
Strong vs. Weak
Bases
More pH Info w/
animations
pH Animation
Acid Base Indicators#1
Acid Base
Indicators#2
Searchable Acid Base
FAQ database
http://www.chemtutor.com/acid.htm
http://www.biology.arizona.edu/biochemistry/problem_sets/ph/ph.html
http://virtual.yosemite.cc.ca.us/lmaki/Chem142/chap_outlines/chapter12.htm
http://www.purchon.com/chemistry/ph.htm
http://www.chemguide.co.uk/physical/acidbaseeqia/acids.html
http://www.chemguide.co.uk/physical/acidbaseeqia/bases.html
http://web.jjay.cuny.edu/~acarpi/NSC/7-ph.htm
http://www.johnkyrk.com/pH.html
http://chemistry.about.com/od/acidsbases/a/Acid-Base-Indicators.htm
http://www.chemguide.co.uk/physical/acidbaseeqia/indicators.html
http://antoine.frostburg.edu/chem/senese/101/acidbase/faq.shtml
Mr. Shepherd’s Physical Science
Name:________________________________
1.) Describe the physical properties, taste, feel, etc, of Acids. And of Bases.
Acids:
_________________________________________________________________________________________
Bases:
____________________________________________________________________________________
2.) Give 3 examples of acids and 3 examples of bases from the pH Scale on this document:
Acids:
1.
2.
3.
Bases:
1.
2.
3.
3.) List the metals that acids react with to form H2 gas:___________________________________
4.) When acids react with react with compounds containing CO32- what products are
formed?________________________________________________
5.) Acids turn litmus ________________ .
6.) Bases turn litmus _______________ .
7.) Bases react with most cations to precipitate _________________________.
8.) What is the difference between an electrolyte and a nonelectrolyte? __________
________________________________________________________________
9.) How can pH be determined experimentally? ________________________________________ .
10.) How do you neutralize an acid? _______________________________________
A base? _________________________________________________________
11.) Watch the pH animation and describe the role of an acid and of a base in an acid/base reaction.
12.) How is a strong acid different from a weak acid?
13.) How is a strong base different from a weak base?
14.) List the six strong acids:
___________________________________________________________ .
15.) Why do we use a double arrow in( ↔ ) the dissociation equation for a weak acid?
_________________________________________________________________________________ .
16.) Why is only one arrow ( → ) required for the dissociation of a strong acid?
_____________________________________________________________________ .
17.) List the 3 scenarios for a substance being classified as a weak acid:
a.) _______________________________________________________________ .
b.)________________________________________________________________ .
c.) _______________________________________________________________ .
Mr. Shepherd’s Physical Science
Name:________________________________
18.) Describe strong bases: ______________________________________________ .
19.) Which are the strong bases?__________________________________________________ .
20.) How many moles of OH ions are produced from the hydroxides of Group II metals for every
mole of base that dissociates? _________________ .
21.) Give the general equation for the reaction of a weak base with water:
22.) What do scientists use to measure pH? ________________________________
23.) pH is measured on a logarithmic scale. What does this mean?
________________________________________________________________
________________________________________________________________
24a. What is the difference between pH and pOH?
(equation)
25b. What do the brackets around a chemical mean, like for [H+]?
____________________________________________________________________
Use this link to answer the following questions:
http://www.wwnorton.com/college/chemistry/gilbert2/tutorials/interface.asp?chapter=chapter_16
&folder=acid_rain
26.) Rain that has a very low pH is called ____________________________ .
27.) Natural rainwater has a pH of ______________ .
28.) Sulfur dioxide reacts with atmospheric oxygen to form ______________ .
29.) Name the two acids in pollution that make rain acidic: _____________________ .
30.) Fish in a lake will die if the pH drops below _____________ .
Use this link to answer the following questions:
http://www.wwnorton.com/college/chemistry/gilbert2/tutorials/interface.asp?chapter=chapter_16
&folder=strong_titrations
31.) A titration is the ___________________________________________________ .
32.) The solution of known concentration is called the _________________________ .
33.) The initial volume is read from the bottom of the _________________________ .
34.) The equivalence point of a titration is when______________________________ .
35.) The course of the reaction during a titration can be followed by plotting the pH on a
_________________________________ .
36.) The pH of the solution at the equivalence point is determined by
________________________________________ .
37.) What is an indicator? ______________________________________________ .
38.) What color is methyl red at pH = 8? ______________ .
39.) In acidic solutions ________________________ is colorless.
40.) When base is added, phenolphthalein will remain colorless until the pH = _____ .
41.) At the equivalence point of the titration, the color of the solution will be __________ .
Mr. Shepherd’s Physical Science
Name:________________________________