MEDIUM
AS and A Level
IMPORTANT
Earn 100

Propanoic acid is a weak acid. A 0.0500 mol dm-3 solution of propanoic acid has a pH of 3.1 . Calculate the value of Ka, for propanoic acid. Show all your working.

Important Questions on Further Aspects of Equilibria

EASY
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 21 - Further Aspects of Equilibria>BEFORE YOU START>Q 1
Write down the definition of a Bronsted-Lowry acid and Bronsted-Lowry base.
 
EASY
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 21 - Further Aspects of Equilibria>BEFORE YOU START>Q 2
Explain the meaning of the terms: equilibrium, equilibrium constant, dissociation, strong acid, strong base, weak acid, weak base, neutralisation.
EASY
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 21 - Further Aspects of Equilibria>BEFORE YOU START>Q 3
Make a list of strong acids and weak acids and strong bases and weak bases. 
MEDIUM
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 21 - Further Aspects of Equilibria>BEFORE YOU START>Q 4
Select a weak acid and write an equilibrium expression for the acid. Note that the process is the same as for writing equilibrium expressions for K that you used Ka instead of Kc .
MEDIUM
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 21 - Further Aspects of Equilibria>BEFORE YOU START>Q 5
Explain why the equation H+ + OH- →H2O applies to any acid-alkali reaction.
MEDIUM
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 21 - Further Aspects of Equilibria>BEFORE YOU START>Q 6
Write a paragraph describing how to carry out an experiment to find the enthalpy change of neutralisation of an acid by an alkali.
MEDIUM
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 21 - Further Aspects of Equilibria>BEFORE YOU START>Q 7
Explain the meaning of the terms: solute, solution, salt, sparingly soluble, polarisation, non-polar, enthalpy change, hydration.
MEDIUM
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 21 - Further Aspects of Equilibria>Questions for discussion>Q •
Make a list of the disadvantages of hard water.