Core
Describe the electrode products in the electrolysis of:
- – molten lead(II) bromide
- – concentrated hydrochloric acid
- – concentrated aqueous sodium chloride between inert electrodes (platinum or carbon)
- – concentrated hydrochloric acid
- State the general principle that metals or hydrogen are formed at the negative electrode (cathode), and that non-metals (other than hydrogen) are formed at the positive electrode (anode)
- Predict the products of the electrolysis of a specified binary compound in the molten state
- Describe the electroplating of metals
- Name the uses of electroplating
- Describe the reasons for the use of copper and (steel-cored) aluminium in cables, and why plastics and ceramics are used as insulators
Supplement
- RELATE THE PRODUCTS OF ELECTROLYSIS TO
THE ELECTROLYTE AND ELECTRODES USED, EXEMPLIFIED BY THE SPECIFIC EXAMPLES IN THE CORE TOGETHER WITH AQUEOUS COPPER(II) SULFATE USING CARBON ELECTRODES AND USING COPPER ELECTRODES (AS USED IN THE REFINING OF COPPER) - DESCRIBE ELECTROLYSIS IN TERMS OF THE IONS PRESENT AND REACTIONS AT THE ELECTRODES IN THE EXAMPLES GIVEN
- PREDICT THE PRODUCTS OF ELECTROLYSIS OF A SPECIFIED HALIDE IN DILUTE OR CONCENTRATED AQUEOUS SOLUTION
- DESCRIBE, IN OUTLINE, THE MANUFACTURE OF
- – ALUMINIUM FROM PURE ALUMINIUM OXIDE IN MOLTEN CRYOLITE
- – CHLORINE AND SODIUM HYDROXIDE FROM CONCENTRATED AQUEOUS SODIUM CHLORIDE
(STARTING MATERIALS AND ESSENTIAL CONDITIONS SHOULD BE GIVEN BUT NOT TECHNICAL DETAILS OR DIAGRAMS.)
- – ALUMINIUM FROM PURE ALUMINIUM OXIDE IN MOLTEN CRYOLITE