Chemistry: Matter and Change
Chemistry: Matter and Change
1st Edition
ISBN: 9780078746376
Author: Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Publisher: Glencoe/McGraw-Hill School Pub Co
Question
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Chapter 18.4, Problem 50SSC
Interpretation Introduction

Interpretation:

The difference between the equivalence point and the end point of a titration is to be explained.

Concept introduction:

The equivalence point and the end point of a titration give some indications about the titration.

The end point of a titration is the point at which indicator changes its color.

Expert Solution & Answer
Check Mark

Answer to Problem 50SSC

The equivalence point is the pH value at which [H+]fromacid=[OH]frombase

The end point of a titration is the point at which indicator changes its color.

Explanation of Solution

At equivalence point,

[H+]=[OH]

Equivalence point is shown in pHvsvolume graph.

End point indicates that titration is completed. At end point indicator changes its color.

For example:

Phenolphthalein is colorless in basic medium but turns light pink in acidic medium.

Thus appearance of light pink color in titration of HClvsNaOH shows end point that is whole NaOH is neutralized.

Conclusion

Equivalence point and end points are two different quantities.

Equivalence point is a value where end point is a indication of neutralization.

Chapter 18 Solutions

Chemistry: Matter and Change

Ch. 18.1 - Prob. 11SSCCh. 18.2 - Prob. 12PPCh. 18.2 - Prob. 13PPCh. 18.2 - Prob. 14PPCh. 18.2 - Prob. 15PPCh. 18.2 - Prob. 16PPCh. 18.2 - Prob. 17SSCCh. 18.2 - Prob. 18SSCCh. 18.2 - Prob. 19SSCCh. 18.2 - Prob. 20SSCCh. 18.2 - Prob. 21SSCCh. 18.3 - Prob. 22PPCh. 18.3 - Prob. 23PPCh. 18.3 - Prob. 24PPCh. 18.3 - Prob. 25PPCh. 18.3 - Prob. 26PPCh. 18.3 - Prob. 27PPCh. 18.3 - Prob. 28PPCh. 18.3 - Prob. 29PPCh. 18.3 - Prob. 30PPCh. 18.3 - Prob. 31PPCh. 18.3 - Prob. 32PPCh. 18.3 - Prob. 33PPCh. 18.3 - Prob. 34PPCh. 18.3 - Prob. 35SSCCh. 18.3 - Prob. 36SSCCh. 18.3 - Prob. 37SSCCh. 18.3 - Prob. 38SSCCh. 18.3 - Prob. 39SSCCh. 18.3 - Prob. 40SSCCh. 18.3 - Prob. 41SSCCh. 18.3 - Prob. 42SSCCh. 18.3 - Prob. 43SSCCh. 18.4 - Prob. 44PPCh. 18.4 - Prob. 45PPCh. 18.4 - Prob. 46PPCh. 18.4 - Prob. 47PPCh. 18.4 - Prob. 48PPCh. 18.4 - Prob. 49SSCCh. 18.4 - Prob. 50SSCCh. 18.4 - Prob. 51SSCCh. 18.4 - Prob. 52SSCCh. 18.4 - Prob. 53SSCCh. 18.4 - Prob. 54SSCCh. 18 - Prob. 55ACh. 18 - Write a balanced chemical equation that represents...Ch. 18 - Classify each compound as an Arrhenius acid or an...Ch. 18 - Geology When a geologist adds a few drops of HCl...Ch. 18 - Explain the meaning of the relative sizes of the...Ch. 18 - Explain the difference between a monoprotic acid,...Ch. 18 - Why can H+ and H3O+ be used interchangeably in...Ch. 18 - Use the symbols ,, and = to express the...Ch. 18 - Explain how the definition of a Lewis acid differs...Ch. 18 - Prob. 64ACh. 18 - Explain the difference between a strong acid and a...Ch. 18 - Explain why equilibrium arrows are used in the...Ch. 18 - Which of the beakers shown in Figure 18.29 might...Ch. 18 - How would you compare the strengths of two weak...Ch. 18 - Identify the conjugate acid-base pairs in the...Ch. 18 - Prob. 70ACh. 18 - Prob. 71ACh. 18 - Prob. 72ACh. 18 - Prob. 73ACh. 18 - Prob. 74ACh. 18 - What is the relationship between the pOH and the...Ch. 18 - Solution A has a pH of 2.0. Solution B has a pH of...Ch. 18 - \If the concentration of H+ ions in an aqueous...Ch. 18 - Use Le Chátelier's principle to explain what...Ch. 18 - Common Acids and Bases Use the data in Table 18.8...Ch. 18 - Prob. 80ACh. 18 - Prob. 81ACh. 18 - Prob. 82ACh. 18 - Prob. 83ACh. 18 - Prob. 84ACh. 18 - What acid and base must react to produce an...Ch. 18 - What acid-base indicators, shown in Figure 18.24...Ch. 18 - When might a pH meter be better than an indicator...Ch. 18 - sWhat happens when an acid is added to a solution...Ch. 18 - When methyl red is added to an aqueous solution, a...Ch. 18 - Give the name and formula of the acid and the base...Ch. 18 - Prob. 91ACh. 18 - Prob. 92ACh. 18 - In an acid-base titration, 45.78 mL of a sulfuric...Ch. 18 - Prob. 94ACh. 18 - Prob. 95ACh. 18 - Prob. 96ACh. 18 - Prob. 97ACh. 18 - Prob. 98ACh. 18 - Prob. 99ACh. 18 - Prob. 100ACh. 18 - Prob. 101ACh. 18 - Prob. 102ACh. 18 - Prob. 103ACh. 18 - Prob. 104ACh. 18 - Prob. 105ACh. 18 - Prob. 106ACh. 18 - Prob. 107ACh. 18 - Prob. 108ACh. 18 - Prob. 109ACh. 18 - Prob. 110ACh. 18 - Prob. 111ACh. 18 - Prob. 112ACh. 18 - Prob. 113ACh. 18 - Prob. 114ACh. 18 - Prob. 115ACh. 18 - Prob. 116ACh. 18 - Prob. 117ACh. 18 - Prob. 118ACh. 18 - Prob. 119ACh. 18 - Prob. 120ACh. 18 - Prob. 121ACh. 18 - Prob. 122ACh. 18 - Prob. 123ACh. 18 - Prob. 124ACh. 18 - Prob. 125ACh. 18 - Prob. 1STPCh. 18 - Prob. 2STPCh. 18 - Prob. 3STPCh. 18 - Prob. 4STPCh. 18 - Prob. 5STPCh. 18 - Prob. 6STPCh. 18 - Prob. 7STPCh. 18 - Prob. 8STPCh. 18 - Prob. 9STPCh. 18 - Prob. 10STPCh. 18 - Prob. 11STPCh. 18 - Prob. 12STPCh. 18 - Prob. 13STPCh. 18 - Prob. 14STPCh. 18 - Prob. 15STPCh. 18 - Prob. 16STPCh. 18 - Prob. 17STPCh. 18 - Prob. 18STP
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