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Soaps and Detergents

Which of the ...

Question

Which of the following base is preferred in the manufacture of soaps?

A

C a (O H)_{2}

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B

N a O H

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C

S r (O H)_{2}

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D

C s (O H)

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Solution

The correct option is B $N a O H$
Calcium hydroxide, strontium hydroxide, and cesium hydroxide are not preferred for soap making. But, sodium hydroxide causes saponification and, is the essential ingredient in soap making. So option B is the correct one.

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Similar questions

Q. Name the base used in the manufacture of soap.

Q. Read the following passage and answer the given questions.

One of the chief uses of sodium carbonate has been in the conversion of

C a (O H)_{2} (s)

to concentrated aqueous solution of NaOH which in turn was used in the manufacture of soap.

C a (O H)_{2} (s) + 2 N a^{+} (a q) + C O_{3}^{2 -} (a q) ⇌ C a C O_{3} (s) + 2 N a^{+} (a q) + 2 O H^{-} (a q)

In 1775, in order to gain independence from the importation of natural

N a_{2} C O_{3}

, the French government offered a prize to anyone who could devise a process to prepare

N a_{2} C O_{3}

A more economical process but based on the same principle was given by :

Q. What is meant by strong bases ? Classify into the following into strong bases and weak base:

N H_{4} O H, C a (O H)_{2}, N a O H, K O H, M g (O H)_{2}

Q. Which acids/ bases are used for the following?
(i) To neutralize sting of wasps
(ii) In alkaline batteries
(iii) Manufacturing of soap

Q. What is meant by strong bases and weak bases? Classify the following into strong bases and weak bases:
NH₄OH, Ca(OH)₂, NaOH, KOH, Mg(OH)₂

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