UNIT 5

Question 1

Common ion effect

Answer 1

the shift in the position of an equilibrium upon addition of a substance that provides an ion already involved in that equilibrium

Question 2

Titration

Answer 2

a procedure for determining the concentration of a solution by allowing a carefully measured volume of it to react with a solution of another substance (the standard solution) whose concentration is known

• Titrations involving only strong acids or bases are straightforward
• Titrations involving weak acids or bases are complicated by hydolysis of salts
• An indication is added which changes colour once the reaction is complete