LESSON OBJECTIVE: Investigate pH, Kw, Ka, pKa and how to utilise them in calculations. Learning Outcomes: (taken from the Cambridge International AS and A Level Chemistry curriculum) 25.1 Acids and bases 1 understand and use the terms conjugate acid and conjugate base 2 define conjugate acid-base pairs, identifying such pairs in reactions 3 define mathematically the terms pH, Ka pKa and Kw and use them in calculations (Kb and the equation Kw = Ka × Kb will not be tested)

LESSON OBJECTIVE: Investigate the relationship between concentration and cell potential both qualitatively and, using the Nernst equation, quantitatively Learning Outcomes: (taken from the Cambridge International AS and A Level Chemistry curriculum) 24.2 Standard electrode potentials E⦵; standard cell potentials E⦵cell and the Nernst equation 6 deduce from E values the relative reactivity of elements, compounds and ions as oxidising agents or as reducing agents 7 construct redox equations using the relevant half-equations 8 predict qualitatively how the value of an electrode potential, E, varies with the concentration of the aqueous ions 9 use the Nernst equation, e.g. E = E⦵ + (0.059/z) log [oxidised species]/[reduced species] to predict quantitatively how the value of an electrode potential varies with the concentrations of the aqueous ions; examples include Cu2+(aq) + 2e- ⇌ Cu(s), Fe3+(aq) + e- ⇌ Fe2+(aq)

LESSON OBJECTIVE: Calculate standard cell potentials (E⦵cell) and use E⦵ values to determine the feasibility of a reaction Learning Outcomes: (taken from the Cambridge International AS and A Level Chemistry curriculum) 24.2 Standard electrode potentials E⦵; standard cell potentials E⦵cell and the Nernst equation 4 calculate a standard cell potential by combining two standard electrode potentials 5 use standard cell potentials to: (a) deduce the polarity of each electrode and hence explain/deduce the direction of electron flow in the external circuit of a simple cell (b) predict the feasibility of a reaction

LESSON OBJECTIVE: Investigate electrolysis and predict products from the electrolysis of both molten and aqueous compounds Learning Outcomes: (taken from the Cambridge International AS and A Level Chemistry curriculum) 24.1 Electrolysis 1 predict the identities of substances liberated during electrolysis from the state of electrolyte (molten or aqueous), position in the redox series (electrode potential) and concentration

LESSON OBJECTIVE: Understand the use of electrolysis quantitatively using changes in electrode mass. Learning Outcomes: (taken from the Cambridge International AS and A Level Chemistry curriculum) 24.1 Electrolysis 2 state and apply the relationship F = Le between the Faraday constant, F, the Avogadro constant, L, and the charge on the electron, e 3 calculate: the quantity of charge passed during electrolysis, using Q = It the mass and/or volume of substance liberated during electrolysis 4 describe the determination of a value of the Avogadro constant by an electrolytic method

LESSON OBJECTIVE: Understand how to measure the standard electrode potentials of a half-cell relative to the standard hydrogen electrode. Learning Outcomes: (taken from the Cambridge International AS and A Level Chemistry curriculum) 24.2 Standard electrode potentials E⦵; standard cell potentials E⦵cell and the Nernst equation 2 describe the standard hydrogen electrode 3 describe methods used to measure the standard electrode potentials of: (a) metals or non-metals in contact with their ions in aqueous solution (b) ions of the same element in different oxidation states

LESSON OBJECTIVE: Investigate the concept of electrode potential and describe galvanic cells. Learning Outcomes: (taken from the Cambridge International AS and A Level Chemistry curriculum) 24.2 Standard electrode potentials E⦵; standard cell potentials E⦵cell and the Nernst equation 1 define the terms: (a) standard electrode (reduction) potential (b) standard cell potential