While testing two pon sites , students found the water went from pH 7 at site a to pH 6 at site b .the students can conclude that the water at site b is 10x more acidic than the water at site a .
pH is the measure of acidity and basicity of a substance .
pH stands for hydrogen potential . it can be defined as the negative log of hydrogen ion concentration .
it can be measured by a pH scale , which ranges from 0 to 14 .
if the pH value is less than 7 , then the compound is called as acidic .
if the Ph value is greater than 7 , then the compound is called as basic .
if the pH is 7 , then the compound is called as neutral compound .
pH equals to 0 , called strongly acidic solution . pH equals to 14 is called strongly basic solution .
pH does not have units .
The formula for pH is given by ,
pH = - log[H+]
pH zero for 1N solution of strong acid .
pH is negative for concentrations 2N, 3N ,10N of strong acids .
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