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Byju's Answer
Standard VII
Chemistry
Acids
Soaps are and...
Question
Soaps are ______ and ______ salts of long chain fatty acids.
A
potassium and calcium
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B
sodium and calcium
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C
sodium and potassium
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D
calcium and magnesium
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Solution
The correct option is
C
sodium and potassium
Soaps are potassium and sodium salts of long-chain fatty acids.
R
C
O
O
−
N
a
+
,
R
C
O
O
−
K
+
.
Example: Sodium palmitate
[
C
H
3
(
C
H
2
)
14
C
O
O
−
N
a
+
]
Option C is correct.
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1
Similar questions
Q.
Soaps are sodium or potassium salts of long chain fatty acids.
Q.
Consider the following two statements about soap and detergent –
(i) Soaps and detergents are salts of long chain fatty acids.
(ii) Both soap and detergent precipitate scum in hard water.
(iii) Soap is sodium or potassium salt of fatty acids whereas detergents are ammoniuma nd sulphonate salts of fatty acids.
Which of the above statements is (are) true?
Q.
Hard soap is a
salt whereas soft soap is a
salt of fatty acids.
Q.
State true or false.
Soft soaps are potassium salts of higher fatty acids.
Q.
Consider the following two statements about soap and detergent –
(i) Soap is natural while detergent is a synthetic product.
(ii) Both soap and detergent precipitate scum in hard water
(iii) Soap is sodium or potassium salt of fatty acids
Which of the above statements is (are) true?
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