Soaps are and salts of certain acids.

potassium and calcium

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sodium and calcium

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sodium and potassium

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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.
General Formula: $R {C O O}^{-} {N a}^{+}$ , $R {C O O}^{-} K^{+}$ .
Example: Sodium palmitate ( ${C H}_{3} {({C H}_{2})}_{14} {C O O}^{-} {N a}^{+}$ )

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Question 2

Products of a neutralization reaction are always
(a) an acid and a base.
(b) an acid and a salt.
(c) a salt and water.
(d) a salt and a base.

Soap is a salt of _____ and sodium hydroxide.

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