Chemistry for Changing Times
Chemistry for Changing Times
14th Edition
ISBN: 9780134212777
Author: John W. Hill; Terry W. McCreary
Publisher: Pearson Education (US)
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Chapter 7, Problem 1RQ

(a)

Interpretation Introduction

Interpretation:

The term “acid” should be defined by giving an example.

Concept Introduction:

The chemical properties of an acid and a base are different from each other because both are chemically opposite. Acid and base reacts with each other to form water and salt. The reaction is known as neutralization reaction. In aqueous solution, acid gives hydrogen ion/s Chemistry for Changing Times, Chapter 7, Problem 1RQ , additional homework tip  1and base gives hydroxide ion/s Chemistry for Changing Times, Chapter 7, Problem 1RQ , additional homework tip  2these positive and negative ions combined to form H2O and affect the concentration of aqueous solution.

(a)

Expert Solution
Check Mark

Answer to Problem 1RQ

Solution:

A compound that gives H+ ion/s in the aqueous solution and turns litmus indicator dye to red is termed as an acid. For example: Hydrogen chlorideChemistry for Changing Times, Chapter 7, Problem 1RQ , additional homework tip  3

Explanation of Solution

An acid is a compound with some particular properties such as sour in taste and its reaction with base results in the formation of salt and water. It turns litmus indicator dye to red. On reaction with metals, hydrogen gas H2 is released. They also produce H+ ion/s in aqueous solution.

Example of an acid is hydrogen chlorideChemistry for Changing Times, Chapter 7, Problem 1RQ , additional homework tip  4It is a strong acid and completely dissociates into H+ and Chemistry for Changing Times, Chapter 7, Problem 1RQ , additional homework tip  5ions in the aqueous solution.

Conclusion

Hydrogen chloride is an acid because it gives H+ ion in the aqueous solution. Also, it turns litmus indicator dye to red. On reaction with metals such as zinc and iron it produces H2 gas.

(b)

Interpretation Introduction

Interpretation:

The term “base” should be defined by giving an example.

Concept Introduction:

The chemical properties of an acid and a base are different from each other because both are chemically opposite. Acid and base reacts with each other to form water and salt. The reaction is known as neutralization reaction. In aqueous solution, acid gives hydrogen ion/s Chemistry for Changing Times, Chapter 7, Problem 1RQ , additional homework tip  6and base gives hydroxide ion/s Chemistry for Changing Times, Chapter 7, Problem 1RQ , additional homework tip  7these positive and negative ions combined to form H2O and affect the concentration of aqueous solution.

(b)

Expert Solution
Check Mark

Answer to Problem 1RQ

Solution:

A compound that gives OH- ion/s in the aqueous solution and turns litmus indicator dye to blue is termed as a base. For example: Sodium hydroxideChemistry for Changing Times, Chapter 7, Problem 1RQ , additional homework tip  8

Explanation of Solution

A base is a compound with some particular properties such as bitter in taste and its reaction with acid results in the formation of salt and water. It turns litmus indicator dye to blue. It feels slippery on the skin. It produces OH- ion/s in the aqueous solution.

Example of a base is sodium hydroxideChemistry for Changing Times, Chapter 7, Problem 1RQ , additional homework tip  9It is a strong base and completely dissociates into Na+ and Chemistry for Changing Times, Chapter 7, Problem 1RQ , additional homework tip  10ions in the aqueous solution.

Conclusion

Sodium hydroxide is a base because it produces OH- ion in the aqueous solution. Also, it turns litmus indicator dye to blue. It reacts with acid to form salt and water.

(c)

Interpretation Introduction

Interpretation:

The term “salt” should be defined by giving an example.

Concept Introduction:

The chemical properties of an acid and a base are different from each other because both are chemically opposite. Acid and base reacts with each other to form water and salt. The reaction is known as neutralization reaction. In aqueous solution, acid gives hydrogen ion/s Chemistry for Changing Times, Chapter 7, Problem 1RQ , additional homework tip  11and base gives hydroxide ion/s Chemistry for Changing Times, Chapter 7, Problem 1RQ , additional homework tip  12these positive and negative ions combined to form H2O and affect the concentration of aqueous solution.

(c)

Expert Solution
Check Mark

Answer to Problem 1RQ

Solution:

Salt is defined as an ionic compound formed from the reaction of an acid and a base. For example: sodium chlorideChemistry for Changing Times, Chapter 7, Problem 1RQ , additional homework tip  13which is formed from the reaction of Chemistry for Changing Times, Chapter 7, Problem 1RQ , additional homework tip  14and Chemistry for Changing Times, Chapter 7, Problem 1RQ , additional homework tip  15as follows:

   Chemistry for Changing Times, Chapter 7, Problem 1RQ , additional homework tip  16

Explanation of Solution

If an acid reacts with a base, salt is formed. It is an ionic compound because it is made up of ions of acid and base. A salt is formed from neutralization reaction of an acid and a base therefore, it is neutral in nature.

For example: Sodium chlorideChemistry for Changing Times, Chapter 7, Problem 1RQ , additional homework tip  17which is formed from the reaction of Chemistry for Changing Times, Chapter 7, Problem 1RQ , additional homework tip  18and Chemistry for Changing Times, Chapter 7, Problem 1RQ , additional homework tip  19as follows:

   Chemistry for Changing Times, Chapter 7, Problem 1RQ , additional homework tip  20

Conclusion

Thus, salt is an ionic compound such as sodium chloride which is formed from the reaction of Chemistry for Changing Times, Chapter 7, Problem 1RQ , additional homework tip  21(acid) and Chemistry for Changing Times, Chapter 7, Problem 1RQ , additional homework tip  22(base).

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Chapter 7 Solutions

Chemistry for Changing Times

Ch. 7 - Prob. 11RQCh. 7 - Prob. 12RQCh. 7 - 13. Write equations that represent the action in...Ch. 7 - Prob. 14PCh. 7 - Prob. 15PCh. 7 - Write equations that represent the action in water...Ch. 7 - 17 Use the Brønsted-Lowry definitions to identify...Ch. 7 - Prob. 18PCh. 7 - Prob. 19PCh. 7 - Prob. 20PCh. 7 - Prob. 21PCh. 7 - Prob. 22PCh. 7 - Prob. 23PCh. 7 - Prob. 24PCh. 7 - Prob. 25PCh. 7 - Prob. 26PCh. 7 - Prob. 27PCh. 7 - Prob. 28PCh. 7 - Prob. 29PCh. 7 - Prob. 30PCh. 7 - Prob. 31PCh. 7 - Prob. 32PCh. 7 - Prob. 33PCh. 7 - Prob. 34PCh. 7 - Prob. 35PCh. 7 - Prob. 36PCh. 7 - Prob. 37PCh. 7 - Prob. 38PCh. 7 - Prob. 39PCh. 7 - Prob. 40PCh. 7 - Write the equation for the reaction of 1 mol of...Ch. 7 - Prob. 42PCh. 7 - Prob. 43PCh. 7 - Prob. 44PCh. 7 - Prob. 45PCh. 7 - Prob. 46PCh. 7 - Prob. 47PCh. 7 - Prob. 48PCh. 7 - Prob. 49PCh. 7 - Prob. 50PCh. 7 - Prob. 51PCh. 7 - Prob. 52PCh. 7 - Prob. 53PCh. 7 - Prob. 54PCh. 7 - Prob. 55PCh. 7 - Prob. 56PCh. 7 - Prob. 57APCh. 7 - Prob. 58APCh. 7 - Prob. 59APCh. 7 - Prob. 60APCh. 7 - Prob. 61APCh. 7 - Prob. 62APCh. 7 - Prob. 63APCh. 7 - Prob. 64APCh. 7 - Prob. 65APCh. 7 - Prob. 66APCh. 7 - Prob. 67APCh. 7 - Prob. 68APCh. 7 - Prob. 69APCh. 7 - Prob. 70APCh. 7 - Prob. 71APCh. 7 - Prob. 72APCh. 7 - Prob. 73APCh. 7 - Prob. 74APCh. 7 - Prob. 75APCh. 7 - Prob. 7.1CTECh. 7 - Prob. 7.2CTECh. 7 - Prob. 7.3CTECh. 7 - Prob. 7.4CTECh. 7 - Prob. 7.5CTECh. 7 - Prob. 1CGPCh. 7 - Prepare a PowerPoint, poster, or other...Ch. 7 - Prob. 3CGPCh. 7 - Prob. 1CHQCh. 7 - Prob. 2CHQCh. 7 - Prob. 3CHQCh. 7 - Prob. 4CHQCh. 7 - Prob. 5CHQ
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