(a)[1]
Label the anode in Fig. 7.1.
(b)[1]
Name a suitable aqueous electrolyte for the electroplating in Fig. 7.1.
(c)[1]
State the colour of the gas produced at the anode in this electrolysis.
(d)[1]
State whether the electrolysis of molten lead(II) bromide produces a physical or chemical change. Explain your answer.
(e(i))[1]
Name the dilute acid.
(e(ii))[1]
Describe a test for hydrogen. Include test and observations.
(f)[2]
Draw one line from each form of cobalt(II) chloride to the matching description. Forms: hydrated CoCl2, aqueous CoCl2, anhydrous CoCl2. Descriptions: solid CoCl2 containing no water; solid CoCl2 chemically combined with water; CoCl2 dissolved in water.