An organic compound containing C, H and O gave the following analysis

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An organic compound containing C, H and O gave the following analysis:
C=40%; H=6.66%; Its empirical formula would be

Options

(a) C₃H₆O
(b) CHO
(c) CH₂O
(d) CH₄O

Correct Answer:

CH₂O

Explanation:

At wt of C = 12
Rel Number for C = 40/12 = 3.22
Ratio for C = 3.66/3.33 = 1
At wt of H = 1
Rel Number for H = 6.66/1 = 6.66
Ratio for H = 6.66/3.33 = 2
At wt of O = 16
% of O = 100 – (40+6.66) = 53.34%
Rel Number for O = 53.34/16 = 3.33
Ratio for O = 3.33/3.33 = 1
Hence empirical formula is CH₂O

Related Questions:

1. Which of the following carbonates is the most stable?
2. Which of the following is not hygroscopic
3. CO₂ is liberated on adding sodium carbonate to a carboxylic acid.The carbon
4. The ligand N(CH₂CH₂NH₂)₃ is
5. Which of the following is formed, when benzaldehyde reacts with alcoholic KCN

Question Type: Memory (964)
Difficulty Level: Easy (1008)
Topics: Basic Concepts of Chemistry (94)
Subject: Chemistry (2512)

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