Weight (g) of two moles of the organic compound, which is obtained by heating sodium ethanoate with sodium hydroxide in the presence of calcium oxide is :
32
30
18
16
The Correct Option is A
Solution and Explanation
To determine the weight of the organic compound formed by the reaction between sodium ethanoate and sodium hydroxide in the presence of calcium oxide, we need to understand the chemical reaction involved. This is a classic example of a decarboxylation reaction known as the 'soda lime' reaction.
The reaction can be represented as follows:
CH3COONa + NaOH → CH4 + Na2CO3
In this reaction, sodium ethanoate is heated with sodium hydroxide in the presence of calcium oxide to yield methane (CH4) and sodium carbonate (Na2CO3).
We need to calculate the weight of methane formed from two moles of the organic compound.
The molecular weight of one mole of CH4 is 16 g/mol. Thus, for two moles, the weight of methane is calculated as follows:
Weight of 2 moles of CH4 = 2 moles × 16 g/mol = 32 g
Therefore, the weight of the organic compound produced is 32 g.
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Concepts Used:
Introduction to Organic Chemistry
Organic chemistry is the branch of chemistry that involves the scientific study of organic compounds. Organic chemistry primarily deals with the structure and chemical composition of organic compounds, the physical and chemical properties of organic compounds, and the chemical reactions undergone by these compounds.
Reaction Intermediates in Organic Chemistry:
Intermediates can be understood as the first product of a consecutive reaction. For example, in a chemical reaction, if A→B and B→C, then, B can be said to be the intermediate for reaction A→C. The reactions in organic chemistry occur via the formation of these intermediates.
Reagents in Organic Chemistry:
Reagents are the chemicals that we add to bring about a specific change to an organic molecule. Any general reaction in organic chemistry can be written as:
Substrate + Reagent → Product
Where the substrate is an organic molecule to which we add the reagent. Based on the ability to either donate or abstract electrons, the reagents can be classified as:
- Electrophiles
- Nucleophiles