According to BrØnsted and Lowry acid-base concept; a base is

Calculate the oxidation number of carbon in CO32-     

At 25 ˚C, pH neutral water has

Which figure shows the reverse osmosis? Please open to view figures    Questions 9 10 11.docx

The acid dissociation constant (Ka) for the following reaction is best shown by                             HA(aq)   +   H2O (l)   →   H3O+(aq)  +  A-(aq) 

A freshly pressed apple juice has a pH of 3.76. What is the [H+] in the apple juice?

Colloids can be observed in a

Which of the following weak acid shows the strongest acidity?

Colloids are

Semipermiable materials