L: Testing solutions: Acids/Bases

Make a color key on othe pH scale below to show the indicator color for acids and bases.

Strongest acid         weak acid               neutral weak base         weak bases                 strongest base
________________________________________________________________________________
0      1      2        3        4        5        6        7        8        9        10          11          12        13        14
 
 

Dip one end of the pH paper into the solution.  Wait a moment, and then determine whether it is a base or an acid.
 
 

table
Solutions to test
Color of the pH paper
response to the methyl orange solution
Acid or Base
1
HCl
 .  .
. 
2
Drano
. 
 .
 .
3
Ammonia
 .
 .
 .
4
Garden Lime
 .
 .
 .
5
Sulfur
 .
 .
 .
6
Ajax cleaner
 .
 .
 .
7
NaOH
 .
 .
 .
8
Epsom salt
 .
 .
 .
9
lime juice
 .
 .
 .
 

Did you test more acids or more bases?  ._____________________

What color does the paper turn when you dipped t into an acid? ________________

What color does the paper turn when you dipped it into a base? _________________
 

 What does the methyl orange test? ___________________________
 
 
 Do all indicators test the same way?