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pH Scale
Acid Base
0
7
14
Zumdahl, Zumdahl, DeCoste, World of Chemistry 2002, page 515
[H[H++] pH] pH
10-14 14
10-13 13
10-12 12
10-11 11
10-10 10
10-9 9
10-8 8
10-7 7
10-6 6
10-5 5
10-4 4
10-3 3
10-2 2
10-1 1
100 0
1 M NaOH
Ammonia(householdcleaner)
BloodPure waterMilk
VinegarLemon juiceStomach acid
1 M HCl
Aci
dic
N
eutr
al
Bas
ic
pH of Common Substances
Timberlake, Chemistry 7th Edition, page 335
1.0 MHCl0
gastricjuice1.6
vinegar2.8
carbonated beverage3.0
orange3.5
apple juice3.8
tomato4.2
lemonjuice2.2 coffee
5.0
bread5.5
soil5.5
potato5.8
urine6.0
milk6.4
water (pure)7.0
drinking water7.2
blood7.4
detergents8.0 - 9.0
bile8.0
seawater8.5
milk of magnesia10.5
ammonia11.0
bleach12.0
1.0 MNaOH(lye)14.0
8 9 10 11 12 14133 4 5 621 70
acidic neutral basic[H+] = [OH-]
pH of Common Substance
14 1 x 10-14 1 x 10-0 0 13 1 x 10-13 1 x 10-1 1 12 1 x 10-12 1 x 10-2 2 11 1 x 10-11 1 x 10-3 3 10 1 x 10-10 1 x 10-4 4 9 1 x 10-9 1 x 10-5 5 8 1 x 10-8 1 x 10-6 6
6 1 x 10-6 1 x 10-8 8 5 1 x 10-5 1 x 10-9 9 4 1 x 10-4 1 x 10-10 10 3 1 x 10-3 1 x 10-11 11 2 1 x 10-2 1 x 10-12 12 1 1 x 10-1 1 x 10-13 13 0 1 x 100 1 x 10-14 14