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pH of Acids & Bases

Acid pH
Hydrochloric 0.1
Sulfuric 0.3
Nitric 1
Stomach Acid 1
Hydrochloric 1.1
Sulfuric 1.2
Trichloracetic 1.2
Oxalic 1.3
Orthophosphoric 1.5
Sulfurous 1.5
Hydrochloric 2
Lemon Juice 2
Sulfuric 2.1
Citric 2.2
Malic 2.2
Tartaric 2.2
Formic 2.3
Acetic 2.4
Lactic 2.4
Salicylic 2.4
Succinic 2.7
Acetic 2.9
Benzoic 3
Vinegar 3
Alum 3.2
Acetic 3.4
Carbonic 3.8
Hydrogen sulfide 4.1
Arsenious 5
Hydrocyanic 5.1
Boric 5.2
Sodium benzoate 8
Potassium bicarbonate 8.2
Sodium bicarbonate 8.4
Sodium acetate 8.9
Borax 9.2
Barbital sodium 9.4
Calcium carbonate 9.4
Ferrous hydroxide 9.5
Potassium acetate 9.7
Sodium sesquicarbonate 10.1
Magnesia 10.5
Ammonia 10.6
Potassium cyanide 11
Ammonia 11.1
Ammonia 11.5
Potassium carbonate 11.5
Sodium carbonate 11.6
Potassium hydroxide 12
Sodium hydroxide 12
Trisodium phosphate 12
Calcium hydroxide 12.4
Lime 12.4
Sodium metasilicate 12.6
Potassium hydroxide 13
Sodium hydroxide 13
Potassium hydroxide 14
Sodium hydroxide 14