
Interpretation: The balanced equations for the preparation of the given compounds are to be written and the physical state of the products and reactants in each equation is to be indicated.
Concept introduction:
In a balanced chemical equation, the number of atoms of each element on the reactant side is equal to the number ofatoms on the product side.
Elements that are present in the elementary state have zero oxidation state.

Answer to Problem 111AP
Solution:
a)
b)
c)
d)
e)
Explanation of Solution
a)Molecular oxygen
Molecular oxygen (
b)Ammonia
The most common industrial method of preparing ammonia is through Haber’s process. The chemical equation for Haber’s process is given as follows:
On a commercial scale, it can also be prepared by using the saltammonium chloride. The reaction is as follows:
c) Carbon dioxide
Carbon dioxide is found abundantly in the atmosphere. For industrial purposes, it can be prepared by using calcium carbonate. The reaction is as follows:
It can also be prepared by reacting calcium carbonate with hydrochloric acid as follows:
d)Molecular hydrogen
e)Calcium oxide
Empirical formula of calcium oxide is
The reaction is given as follows:
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Chapter 7 Solutions
Chemistry
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