Complete combustion of $1.80 g$ of an oxygen containing compound $\left( C _{ x } H _{ y } O _{2}\right)$ gave $2.64 g$ of $CO _{2}$ and $1.08 g$ of $H _{2} O$. The percentage of oxygen in the organic compound is:
- 51.63
- 63.53
- 53.33
- 50.33
The Correct Option is C
Solution and Explanation
The correct answer is (C) : 53.33
\(n _{ c }= n _{ co _{2}}=\frac{2.64}{44}=0.06\)
\(n _{ H }=2 \times n _{ H _{2} O }=\frac{1.08}{18} \times 2=0.12\)
\(m _{0}=1.80-12 \times \frac{2.64}{44}-\frac{1.08}{18} \times 2\)
\(\quad=1.80-0.72-0.12=0.96 gm\)
\(\% 0=\frac{0.96}{1.80} \times 100=53.33 \%\)
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Concepts Used:
Organic Chemistry - Some Basic Principles and Techniques
Organic Chemistry is a subset of chemistry dealing with compounds of carbon. Therefore, we can say that Organic chemistry is the chemistry of carbon compounds and is 200-225 years old. Carbon forms bond with itself to form long chains of hydrocarbons, e.g.CH4, methane and CH3-CH3 ethane. Carbon has the ability to form carbon-carbon bonds quite elaborately. Polymers like polyethylene is a linear chain where hundreds of CH2 are linked together.
Read Also: Organic Compounds
Importance of Organic Chemistry:
Organic chemistry is applicable in a variety of areas including-
- Medicines: Example- Aspirin which is a headache medicine and Ibuprofen is a painkiller, both are organic compounds. Other examples include paracetamol.
- Food: Example- Starch which is a carbohydrate is an organic compound and a constituent of rice and other grains. It is the source of energy.
- Clothing: Example- Nylon, Polyester and Cotton are forms of organic compounds.
- Fuels: Examples- Gasoline, Petrol and Diesel are organic compounds used in the automobile industry at large.