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Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074

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BuyFindarrow_forward

Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074
Textbook Problem

A Describe how to prepare zinc chloride by (a) an add-base reaction, (b) a gas-forming reaction, and (c) an oxidation-reduction reaction. The available starting materials are ZnCO3, HCl, Cl2, HNO3, Zn(OH)2, NaCl, Zn(NO3)2, and Zn. Write complete, balanced equations for the reactions chosen.

(a)

Interpretation Introduction

Interpretation:

Preparation of Zinc chloride by acid-base reaction by using given starting materials and the complete balanced equations for the reaction chosen should be written,

Concept introduction:

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

Acid- base reaction is shown below,

  Zn(OH)2+ HCl  ZnCl2+ H2O

Balance the equation,

Balance the chlorine atom in the given equation, when balancing the equation, we should not alter the subscripts and we can change coefficients.  There are two chlorine atoms in the right side and one chlorine atom in the left side.  Therefore two molecule of hydrochloric acid is added to left side of reaction.  Therefore the balanced equation is given below

(b)

Interpretation Introduction

Interpretation:

Preparation of BaSO4 by gas forming reaction by using given starting materials and the complete balanced equations for the reaction chosen should be written,

Concept introduction:

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.

(c)

Interpretation Introduction

Interpretation:

Preparation of Zinc chloride by an oxidation-reduction reaction by using given starting materials and the complete balanced equations for the reaction chosen should be written,

Concept introduction:

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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