write balanced chemical equation for the reactions used to prepare each of the following compounds from the given starting material(s). In some cases, additional reactants may be required.
(a) solid Ammonium Nitrate from gaseous molecule of Nitrogen viaa two step process (first reduce the nitrogen to ammonia than neutrlize the ammonium in an appropriate acid)
(b)gaseous hydrogen Bromide liquid molecular bromin via one step redox reaction
(c)gaseous H2S from solid Zn and S via a two step process(first a Redox reaction between the starting material then reaction of the product with a strong acid)

Question

02-09-2019
Chemistry

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write balanced chemical equation for the reactions used to prepare each of the following compounds from the given starting material(s). In some cases, additional reactants may be required.
(a) solid Ammonium Nitrate from gaseous molecule of Nitrogen viaa two step process (first reduce the nitrogen to ammonia than neutrlize the ammonium in an appropriate acid)
(b)gaseous hydrogen Bromide liquid molecular bromin via one step redox reaction
(c)gaseous H2S from solid Zn and S via a two step process(first a Redox reaction between the starting material then reaction of the product with a strong acid)

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OlaMacgregor OlaMacgregor · Answer 1 · 2019-09-06T09:52:46+02:00

Explanation:

A balanced chemical equation is defined as the one that contains same number of atoms on both reactant and product side.

Whereas a chemical reaction that brings change in oxidation state of the reacting species is known as a redox reaction.

When there occurs decrease in oxidation number of an element then it shows the element has been reduced. And, if there occurs an increase in oxidation state of an element then it means the element has been oxidized.

(a) The reaction between nitrogen and hydrogen to form ammonia will be as follows.

[tex]N_{2} + 3H_{2} \rightarrow 2NH_{3}[/tex]

So here, oxidation state of nitrogen is changing from 0 to -3. Whereas oxidation state of hydrogen is changing from 0 to +3.

Reaction between ammonia and nitric acid will be as follows.

[tex]NH_{3} + HNO_{3} \rightarrow NH_{4}NO_{3}[/tex]

Since, it is a combination reaction. Therefore, no change in oxidation state of reacting species is taking place.

(b) Reaction for conversion of liquid bromine to hydrogen bromide is as follows.

[tex]H_{2}(g) + Br_{2}(l) \rightarrow 2HBr(g)[/tex]

Here, oxidation state of hydrogen is changing from 0 to +1. Therefore, oxidation of hydrogen is taking place. On the other hand, oxidation state of bromine is changing from zero to -1. Therefore, reduction of bromine is taking place.

(c) Reaction between Zn and S will be as follows.

[tex]Zn(s) + S(s) \rightarrow ZnS(s)[/tex]

Here, oxidation state of zinc is changing from 0 to +2. Hence, oxidation of zinc is taking place.

Oxidation state of sulfur is changing from 0 to -2. Therefore, reduction of sulfur is taking place.