In Dumas method for the estimation of $N _2$, the sample is heated with copper oxide and the gas evolved is passed over :
In Dumas method for the estimation of $N _2$, the sample is heated with copper oxide and the gas evolved is passed over :
Show Hint
- Copper gauze
- $Pd$
- $Ni$
- Copper oxide
The Correct Option is A
Approach Solution - 1
The nitrogen containing organic compound, when heated with in a atmosphere of , yields free in addition to and .
Traces of nitrogen oxides formed, if any, are reduced to nitrogen by passing the gaseous mixture over heated copper gauze.
So, the correct option is (A) : Copper gauze
Approach Solution -2
In Dumas' method, the nitrogen-containing organic compound is heated with copper oxide in an atmosphere of CO\(_2\).
The resulting reaction produces nitrogen gas in addition to CO\(_2\) and H\(_2\)O:
\[ C_xH_yN_z + \left( 2x + \frac{y}{2} \right) \text{CuO} \rightarrow x \text{CO}_2 + \frac{y}{2} \text{H}_2\text{O} + \frac{z}{2} \text{N}_2 + \left( 2x + \frac{y}{2} \right) \text{Cu} \]
Afterward, any nitrogen oxides formed are reduced to nitrogen gas by passing the gaseous mixture over heated copper gauze.
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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.