What is the difference between a strong acid and a weak acid? Give one example of each.
What is meant by the ionic product for water, Kw? Define pH and hence calculate the pH of a solution of
a) 0.01 M hydrochloric acid
b) 0.1 M sodium hydroxide
c) 0.2 M sulphuric acid
d) 0.1 M butanoic acid, given that Ka = 1.51 x 10-5
Explain clearly the difference between a strong acid and a weak acid. Give one example of each.
OTA: Strong Acid: A strong acid dissociates completely in water. The example is hydrochloric acid. No HCl is left in solution. Only the H+ and Cl- are present in solution.
HCl (aq) -> H+ (aq) + Cl- (aq)
Weak Acid: A weak acid only partially dissociates in water. An example is Acetic Acid (CH3-COOH). Some CH3-COOH will remain in solution.
CH3-COOH (aq) -> CH3-COO- (aq) + H+ (aq)
What is meant by the ionic product for water, Kw ?
H2O dissociates into H+ and OH-. We ...
This solution demonstrates how to identify strong and weak acids and define pH using examples and chemical equations. 400 words.