Electrochemistry Quiz

Define each of the following terms. a Oxidizing agent b. Oxidation c. Number Reducing agent

What will happen if a zinc rod is immersed in a solution of copper (II) sulphate?

Which of the following reactions are redox reactions? Explain your answer for each case. a Ca(s) + 2H2O(l) → Ca(OH)2(aq) + H2(g) b H2SO4(aq) + 2NaOH(aq) → Na2SO4(aq) + 2H2O(l) c Si(s) + 2Cl2(g) → SiCl4(l) d AgNO3(aq) + NaCl(aq) → AgCl(s) + NaNO3(aq)

Use the given chemical equation to answer the following questions; Mg(s) + Zn2+(aq) → Zn(s) + Mg2+(aq) identify the: a) oxidized substance. b) reduced substance. c) oxidizing agent. d) reducing agent.

Calculate the oxidation number of: a. C in C2O42– b. Cr in K2CrO4 c. N in N2O5 d. S in H2SO4 e. Cl in HClO4

What is an electrochemical cell?

What are the two types of electrochemical cells?

• Electrolytic Cell

• Galvanic Cell

What is the role of the anode in an electrolytic cell?

What happens to sodium ions during electrolysis of molten NaCl?

What is preferential discharge in electrolysis?