Translate the following statements into chemical equations and then balance them.
(1) When steam is passed over aluminium.
(2) Extraction of copper from its sulphide ore.
(3) Thermit reaction.
(4) When magnesium reacts with hot water.
(5) What happens when aluminium oxide dissolves in aqueous sodium hydroxide.
Translate the following statements into chemical equations and then balance them.
(1) When steam is passed over aluminium.
(2) Extraction of copper from its sulphide ore.
(3) Thermit reaction.
(4) When magnesium reacts with hot water.
(5) What happens when aluminium oxide dissolves in aqueous sodium hydroxide.
1. Aluminium reacts with steam to form aluminium oxide and hydrogen gas.
Aluminium + Steam —> Aluminium oxide + Hydrogen
2. The concentrated copper sulphide ore is roasted in air when a part of copper sulphide is oxidized to copper oxide.
Copper oxide formed reacts with the remaining copper sulphide to form copper metal and sulphur dioxide.
3. Iron oxide reacts with aluminium to give iron and aluminium oxide and a lot of heat.
4. Magnesium reacts with hot water to form magnesium hydroxide and hydrogen.
5. Aluminium oxide, being amphoteric in nature, dissolves in aqueous sodium hydroxide to form water soluble sodium aluminate.
1. Aluminium reacts with steam to form aluminium oxide and hydrogen gas.
Aluminium + Steam —> Aluminium oxide + Hydrogen
2. The concentrated copper sulphide ore is roasted in air when a part of copper sulphide is oxidized to copper oxide.
Copper oxide formed reacts with the remaining copper sulphide to form copper metal and sulphur dioxide.
3. Iron oxide reacts with aluminium to give iron and aluminium oxide and a lot of heat.
4. Magnesium reacts with hot water to form magnesium hydroxide and hydrogen.
5. Aluminium oxide, being amphoteric in nature, dissolves in aqueous sodium hydroxide to form water soluble sodium aluminate.
