Redox and Electrochemistry
GCE Chemistry

a) Define the following terms as used in electrochemistry: i) Oxidation ii) Reduction iii) Standard electrode potential b) The following standard electrode potentials are given: Zn²⁺(aq)/…

a) i) What is meant by the term 'redox reaction'? ii) Using the reaction between iron(III) ions and iodide ions as an example: 2Fe³⁺(aq) + 2I⁻(aq) → 2Fe²⁺(aq) + I₂(aq) Identify the ox…

What is the oxidation state of manganese in potassium permanganate, $KMnO_4$?

During the electrolysis of dilute sulphuric acid using platinum electrodes, which product is formed at the cathode?

Which of the following half-equations correctly represents the reaction at the anode during the electrolysis of concentrated sodium chloride solution?

Which of the following statements correctly describes oxidation in terms of electron transfer?

How many moles of electrons are transferred when 1 mole of $Cr_2O_7^{2-}$ is reduced to $Cr^{3+}$ in acidic solution?

In an electrolytic cell, a current of 2.0 A is passed through a solution of copper(II) sulphate for 1 hour 4 minutes and 20 seconds. What mass of copper is deposited at the cathode? [Cu = 64, F = 9650…

The standard electrode potential of zinc is −0.76 V and that of copper is +0.34 V. What is the standard electromotive force (e.m.f.) of the electrochemical cell formed when these two electrodes are co…

In the reaction: $2Fe^{3+} + Sn^{2+} \rightarrow 2Fe^{2+} + Sn^{4+}$, which species is the reducing agent?