   Chapter 3, Problem 78GQ

Chapter
Section
Textbook Problem

Aqueous solutions of ammonium sulfide, (NH4)2S, and Hg(NO3)2 react to produce HgS and NH4NO3.(a) Write the overall, balanced equation for the reaction. Indicate the state (s, aq) for each compound.(b) Name each compound.(c) What type of reaction is this?

(a)

Interpretation Introduction

Interpretation:

The overall balanced equation for given reaction has to be written and state of the compound should be identified.

Concept introduction:

The law of conservation of mass states that no atoms can be created or destroyed in a chemical reaction, therefore, the number of atoms present in the reactants is equal to the number of atoms present in the products.

Precipitation reaction: The formation of the product is insoluble when the ions combine in the solution is called precipitation reaction.

Acid - base reaction: Formation of the salt from the cation from the base and anion from the acid and formation of water is also the product.

Gas forming reaction: The reaction of acid and metal carbonates which produce carbonic acid. The carbonic acid decomposes which gives water and carbon dioxide.

Oxidation - reduction reaction: The electrons are transferred to one to other is called oxidation reduction reaction.

Explanation

The reaction of Mercury(II) nitrate and Ammonium sulfide is shown below,

The formation of the product is insoluble when the ions combine in the solution is called precipitation reaction.  Mercuric Sulfide is getting precipitated when Mercury(II) nitrate is reaction with Ammonium sulfide, therefore the given reaction is precipitation reaction and is shown below, the state of the compound is also shown.

Balance the equation,

Balance the hydrogen atom in the given equation, when balancing the equation, we should not alter the subscripts and we can change coefficients...

(b)

Interpretation Introduction

Interpretation:

In the given reaction each of the compound should be named.

(c)

Interpretation Introduction

Interpretation:

Type of the reaction should be identified.

Concept Introduction:

Types of reaction:

Precipitation reaction: The formation of the product is insoluble when the ions combine in the solution is called precipitation reaction.

Acid - base reaction: Formation of the salt from the cation from the base and anion from the acid and formation of water is also the product.

Gas forming reaction: The reaction of acid and metal carbonates which produce carbonic acid. The carbonic acid decomposes which gives water and carbon dioxide.

Oxidation - reduction reaction: The electrons are transferred to one to other is called oxidation reduction reaction.

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