Organic Chemistry> soda lime...

what is the use of 'cao' in decarboxylation reaction?

praneeth bonu , 14 Years ago

Grade 12

3 Answers

Aman Bansal

Dear Praneeth,

odium salts of corboxylic acids on heating with soda lime (mixture of sodium hydroxide and calcium oxide) give

alkanes containing one carbon atom less than the corboxylic acid.This process of elimanation of carbon dioxide

from corboxylic acid is known as decorboxylation.

CH₃ COO^-Na⁺ +NaOH ---------------------> CH₄ +Na₂ CO₃

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Last Activity: 14 Years ago

Yuvika Saini

1 . CaO permits the reaction to be carried out at a relatively higher temperature to ensure complete decarboxylation 2 . CaO keeps NaOH dry because it is quite hygroscopic in nature

Last Activity: 9 Years ago

Rushda Rashid Buddannavar

It absorbs the Moisture of NaOH during the Reaction and keeps it dry .., So that effeciency of NaOH will increase and it can further proceed the reaction in a maximum effeciency..

Last Activity: 3 Years ago