Table comparing pH, hydrogen ion concentration, and acidity

pH [H+] Description Acidity in comparison to neutral
0
 1.0
 Extremely acidic 10,000,000 times stronger
1
 0.1
 Potent acid 1,000,000 times stronger
2
 0.01
 Very strong acid 100,000 times stronger
3
 0.001
 Strong acid 10,000 times stronger
4
 0.0001
 Acid
1000 times stronger
5
 10-5
 Weak acid
100 times stronger
6
 10-6
 Mild acid 10 times stronger
7
 10-7
 Neutral
Identical
8
 10-8
 Mild base 10 times weaker
9
  10-9
 Weak base 100 times weaker
10
  10-10
 Base 1000 times weaker
11
      10-11  
Strong base 
10,000 times weaker
12
 10-12
 Very strong base 100,000 times weaker
13
 10-13
Potent base 1,000,000 times weaker
14
 10-14
Extremely basic 10,000,000 times weaker

                        

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