i) Define combination reaction. Give Example,
ii) List any two strong acids and strong bases.
iii) What is an amphoteric oxide?
iv) Define: Catenation
V) Suggest any two methods to prevent corrosion
Answers
Explanation:
In combination reactions, two or more substances combine to form a new compound. ... The reactants in such reactions can be elements as well as compounds. For Example, Calcium oxide reacts with water to produce calcium hydroxide.
Metal oxides which react with both acids as well as bases to produce salts and water are known as amphoteric oxides. Many metals (such as zinc, tin, lead, aluminium, and beryllium) form amphoteric oxides or hydroxides. Amphoterism depends on the oxidation states of the oxide.
This carbon property is known as catenation, carbon can form a long chain due to catenation; thus bonding with other carbon atoms. By catenation, carbon can produce single, double and triple bonds. Examples are sulphur show catenation up to eight atoms in the formation of S8 molecules of sulphur
One simple way to prevent corrosion is to use a corrosion resistant metal such as aluminum or stainless steel. ...
Protective Coatings. The application of a paint coating is a cost-effective way of preventing corrosion. ...
Environmental Measures. ...
Sacrificial Coatings. ...
