What is the percentage mass ratio of carbon and hydrogen in benzene?
Correct answer: D. 12:1
- A. 1:1
- B. 3:1
- C. 6:1
- D. 12:1
Explanation
The mass of carbon is 12g/mol and that of hydrogen is 1g/mol. Since there are 6 carbon atoms in benzene and 6 hydrogen atoms, the ratio of percentage mass will become 6x12:6x1 which is the same as 72:6. This can be simplified to 12:1.
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Hydrocarbons are studied through the structures and reactions of alkanes, alkenes, alkynes and aromatic compounds. Coverage includes free radical substitution in alkanes, electrophilic addition to carbon-carbon multiple bonds, benzene substitution, aromatic stability and the difference between addition reactions of alkenes and substitution reactions of benzene.
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