Advantages and disadvantages of soap should be identified. Concept introduction: Soap is a substance used with water for cleansing and washing. Soaps are made from oils and fats, or their fatty acids, by treating them with strong alkali chemically. Soap is a sodium or potassium salt of a long a chain of fatty acid.

Question

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Answer 1

Question

Chapter 21, Problem 1RQ

Interpretation Introduction

Interpretation:

Advantages and disadvantages of soap should be identified.

Concept introduction:

Soap is a substance used with water for cleansing and washing. Soaps are made from oils and fats, or their fatty acids, by treating them with strong alkali chemically. Soap is a sodium or potassium salt of a long a chain of fatty acid.

Expert Solution & Answer

Answer to Problem 1RQ

Solution:

The main disadvantage of soap is that it does not work well in hard water and the main advantage of soap is that it is derived from renewable sources.

Explanation of Solution

Advantages of soap:

It is an excellent cleanser in soft water.
It is relatively non-toxic.
It is derived from renewable sources (animal fats and vegetable oils).
It is biodegradable.

Disadvantages of soap:

It does not work well in hard water as hard water contains calcium, magnesium and iron ions. The anions of soap react with the metal ions and form insoluble, greasy curds.
In acidic solutions, soaps are converted to free fatty acids, which have no cleansing action and are also insoluble in water and separate as a greasy scum.

Conclusion

The main disadvantage of soap is that it does not work well in hard water and the main advantage of soap is that it is derived from renewable sources.

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Answer 2

Question

Chapter 21, Problem 1RQ

Interpretation Introduction

Interpretation:

Advantages and disadvantages of soap should be identified.

Concept introduction:

Soap is a substance used with water for cleansing and washing. Soaps are made from oils and fats, or their fatty acids, by treating them with strong alkali chemically. Soap is a sodium or potassium salt of a long a chain of fatty acid.

Expert Solution & Answer

Answer to Problem 1RQ

Solution:

The main disadvantage of soap is that it does not work well in hard water and the main advantage of soap is that it is derived from renewable sources.

Explanation of Solution

Advantages of soap:

It is an excellent cleanser in soft water.
It is relatively non-toxic.
It is derived from renewable sources (animal fats and vegetable oils).
It is biodegradable.

Disadvantages of soap:

It does not work well in hard water as hard water contains calcium, magnesium and iron ions. The anions of soap react with the metal ions and form insoluble, greasy curds.
In acidic solutions, soaps are converted to free fatty acids, which have no cleansing action and are also insoluble in water and separate as a greasy scum.

Conclusion

The main disadvantage of soap is that it does not work well in hard water and the main advantage of soap is that it is derived from renewable sources.

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Answer 3

Question

Chapter 21, Problem 1RQ

Interpretation Introduction

Interpretation:

Advantages and disadvantages of soap should be identified.

Concept introduction:

Soap is a substance used with water for cleansing and washing. Soaps are made from oils and fats, or their fatty acids, by treating them with strong alkali chemically. Soap is a sodium or potassium salt of a long a chain of fatty acid.

Expert Solution & Answer

Answer to Problem 1RQ

Solution:

The main disadvantage of soap is that it does not work well in hard water and the main advantage of soap is that it is derived from renewable sources.

Explanation of Solution

Advantages of soap:

It is an excellent cleanser in soft water.
It is relatively non-toxic.
It is derived from renewable sources (animal fats and vegetable oils).
It is biodegradable.

Disadvantages of soap:

It does not work well in hard water as hard water contains calcium, magnesium and iron ions. The anions of soap react with the metal ions and form insoluble, greasy curds.
In acidic solutions, soaps are converted to free fatty acids, which have no cleansing action and are also insoluble in water and separate as a greasy scum.

Conclusion

The main disadvantage of soap is that it does not work well in hard water and the main advantage of soap is that it is derived from renewable sources.

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Answer 4

Question

Chapter 21, Problem 1RQ

Interpretation Introduction

Interpretation:

Advantages and disadvantages of soap should be identified.

Concept introduction:

Soap is a substance used with water for cleansing and washing. Soaps are made from oils and fats, or their fatty acids, by treating them with strong alkali chemically. Soap is a sodium or potassium salt of a long a chain of fatty acid.

Expert Solution & Answer

Answer to Problem 1RQ

Solution:

The main disadvantage of soap is that it does not work well in hard water and the main advantage of soap is that it is derived from renewable sources.

Explanation of Solution

Advantages of soap:

It is an excellent cleanser in soft water.
It is relatively non-toxic.
It is derived from renewable sources (animal fats and vegetable oils).
It is biodegradable.

Disadvantages of soap:

It does not work well in hard water as hard water contains calcium, magnesium and iron ions. The anions of soap react with the metal ions and form insoluble, greasy curds.
In acidic solutions, soaps are converted to free fatty acids, which have no cleansing action and are also insoluble in water and separate as a greasy scum.

Conclusion

The main disadvantage of soap is that it does not work well in hard water and the main advantage of soap is that it is derived from renewable sources.

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Answer 5

Chapter 21, Problem 1RQ

Interpretation Introduction

Interpretation:

Advantages and disadvantages of soap should be identified.

Concept introduction:

Soap is a substance used with water for cleansing and washing. Soaps are made from oils and fats, or their fatty acids, by treating them with strong alkali chemically. Soap is a sodium or potassium salt of a long a chain of fatty acid.

Expert Solution & Answer

Answer to Problem 1RQ

Solution:

The main disadvantage of soap is that it does not work well in hard water and the main advantage of soap is that it is derived from renewable sources.

Explanation of Solution

Advantages of soap:

It is an excellent cleanser in soft water.
It is relatively non-toxic.
It is derived from renewable sources (animal fats and vegetable oils).
It is biodegradable.

Disadvantages of soap:

It does not work well in hard water as hard water contains calcium, magnesium and iron ions. The anions of soap react with the metal ions and form insoluble, greasy curds.
In acidic solutions, soaps are converted to free fatty acids, which have no cleansing action and are also insoluble in water and separate as a greasy scum.

Conclusion

The main disadvantage of soap is that it does not work well in hard water and the main advantage of soap is that it is derived from renewable sources.

Answer 6

Chapter 21, Problem 1RQ

Interpretation Introduction

Interpretation:

Advantages and disadvantages of soap should be identified.

Concept introduction:

Soap is a substance used with water for cleansing and washing. Soaps are made from oils and fats, or their fatty acids, by treating them with strong alkali chemically. Soap is a sodium or potassium salt of a long a chain of fatty acid.

Expert Solution & Answer

Answer to Problem 1RQ

Solution:

The main disadvantage of soap is that it does not work well in hard water and the main advantage of soap is that it is derived from renewable sources.

Explanation of Solution

Advantages of soap:

It is an excellent cleanser in soft water.
It is relatively non-toxic.
It is derived from renewable sources (animal fats and vegetable oils).
It is biodegradable.

Disadvantages of soap:

It does not work well in hard water as hard water contains calcium, magnesium and iron ions. The anions of soap react with the metal ions and form insoluble, greasy curds.
In acidic solutions, soaps are converted to free fatty acids, which have no cleansing action and are also insoluble in water and separate as a greasy scum.

Conclusion

The main disadvantage of soap is that it does not work well in hard water and the main advantage of soap is that it is derived from renewable sources.

Answer 7

Chapter 21, Problem 1RQ

Interpretation Introduction

Interpretation:

Advantages and disadvantages of soap should be identified.

Concept introduction:

Soap is a substance used with water for cleansing and washing. Soaps are made from oils and fats, or their fatty acids, by treating them with strong alkali chemically. Soap is a sodium or potassium salt of a long a chain of fatty acid.

Answer 8

Expert Solution & Answer

Answer to Problem 1RQ

Solution:

The main disadvantage of soap is that it does not work well in hard water and the main advantage of soap is that it is derived from renewable sources.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Explanation of Solution

Advantages of soap:

It is an excellent cleanser in soft water.
It is relatively non-toxic.
It is derived from renewable sources (animal fats and vegetable oils).
It is biodegradable.

Disadvantages of soap:

It does not work well in hard water as hard water contains calcium, magnesium and iron ions. The anions of soap react with the metal ions and form insoluble, greasy curds.
In acidic solutions, soaps are converted to free fatty acids, which have no cleansing action and are also insoluble in water and separate as a greasy scum.

Answer 12

Conclusion

The main disadvantage of soap is that it does not work well in hard water and the main advantage of soap is that it is derived from renewable sources.

Answer 13

Ch. 21 - Prob. 1RQ Ch. 21 - Prob. 2RQ Ch. 21 - Prob. 3RQ Ch. 21 - Prob. 4RQ Ch. 21 - Prob. 5RQ Ch. 21 - Prob. 6RQ Ch. 21 - Prob. 7RQ Ch. 21 - Prob. 8RQ Ch. 21 - Prob. 9P Ch. 21 - Prob. 10P

Concept explainers

Answer to Problem 1RQ

Explanation of Solution

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Chapter 21 Solutions