BIOMOLECULES AND ENZYMES

Detailed explanation-1: -pHs less than 7 are acidic while pHs greater than 7 are alkaline (basic).

Detailed explanation-2: -In chemistry, pH (/piːˈeɪtʃ/), historically denoting “potential of hydrogen” (or “power of hydrogen"), is a scale used to specify the acidity or basicity of an aqueous solution. Acidic solutions (solutions with higher concentrations of H + ions) are measured to have lower pH values than basic or alkaline solutions.

Detailed explanation-3: -How did the pH get its name? The term “pH” was first described by Danish biochemist Søren Peter Lauritz Sørensen in 1909. pH is an abbreviation for “power of hydrogen” where “p” is short for the German word for power, potenz and H is the element symbol for hydrogen.

Detailed explanation-4: -If you add acid to a solution the concentration of hydrogen ions (acidity) increases and the pH decreases. Frequently people confuse pH with acidity-pH is the scale on which acidity is expressed, but it is not synonymous with acidity.