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Physical Science
GED
®
TEST SCIENCE FLASH REVIEW
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pH
H
+
(moles
per liter) H
+
(moles per liter)
Acidic 0 10
0
1.0
1
2 10
–2
0.01
3
4 10
–4
0.0001
5
6 10
–6
0.000001
Neutral 7
8 10
–8
0.00000001
9
10 10
–10
0.0000000001
11
12 10
–12
0.000000000001
13
Basic 14 10
–14
0.00000000000001
Based on the information in the table, which of these
solutions has the greatest concentration of hydrogen
ions?
A. pH 2.5
B. pH 4.0
C. pH 7.5
D. pH 10.5