(i) Identify the reactant and write the balanced equation for the following:
Nitric acid reacts with compound Q to give a salt Ca(NO₃)₂, water and carbon dioxide.

(ii) What property of Sulphuric acid is exhibited in each of the following cases:
(a) In the preparation of HCl gas when it reacts with Sodium chloride.
(b) When conc. Sulphuric acid reacts with Copper to produce Sulphur dioxide gas.

(iii) The electron affinity of an element X is greater than that of element Y.
(a) How is the oxidising power of X likely to compare with that of Y?
(b) How is the electronegativity of X likely to compare with that of Y?
(c) State whether X is likely to be placed to the left or to the right of Y in the periodic table?

(iv) (a) State wether the following statements are TRUE or FALSE. Justify your answer.
1. In an electrovalent compound, the cation attains the electronic configuration of the noble gas that comes after it in the periodic table.
2. In the formation of a compound PQ₂, atom P gives one electron to each atom of Q. The compound PQ₂ is a good conductor of electricity.
(b) Calculate the number of moles in 22 grams of carbon dioxide .

Solution

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