1.Circle one for each of the following a.If the concentration of hydrogen ions is higher than the concentration of hydroxide ions in a solution, then it is b.If a solution contains equal amounts of hydronium ions and hydroxide ions, then it is
neutral
acidic
basic
acidic
basic
neutral
c.If a solution contains predominantly hydroxide ions,then it is
acidic basic neutral
d.If the pH of a solution increases, the solution is more
acidic
basic
neutral
e.If the pH of a solution decreases,the solution is more
acidic
basic
neutral
2.Consider the following pH scale below:
pH scale
6
-00
9
10
11
12
13
strongly acidic
weakly acidic
weakly basic
neutral
strongly basic
Classify each of the following substances as strongly acidic,weakly acidic,neutral,weakly basic,or strongly basic. Substance pH Classification carbonated water 3.9
stomach acid
1.3 7.0 7.4
saline solution
tears
saliva
6.8 10.3
Codeine
carrots
5.1
drain cleaner
13
maple syrup
6.0