Saturday, 5 August 2017

CBSE Class 10 - Chemistry - Acids and Bases - pH of common Acids, Bases and Salts (#cbseNotes)

pH of common Acids, Bases and Salts

CBSE Class 10 - Chemistry - Acids and Bases - pH of common Acids, Bases and Salts  (#cbseNotes)

The acidity of an aqueous solution relies on the concentration of hydronium ions, [H₃O⁺]. For various products (acids, bases and salts), the magnitude of this concentration varies and pH scale is used conveniently. The pH of a solution is defined as the negative base-10 logarithm of the hydronium ion concentration (in mol/L). Here follows a partial list of pH of common acids, bases and salts.



Solution PH range
HCL 1.0 - 2.0
Gastric Juices 1.4 - 2.0
Lemon Juice 2.0- 3.0
Vinegar 4.0
Tomato Juice (Oxalic Acid) 4.1
Coffee 5.0
Milk (Lactic Acid) 6.5
Soft Drinks 6.0
Pure Water (Distilled Water) 7.0
Potable Water 6.5 - 8.5
Saliva (Before Meals) 7.4
Saliva (After Meals) 5.8
Toothpaste 8
Blood 7.4
Dilute NaOH 7.4
Blood 10 - 12.0
Conc NaOH 13.0 - 14.0