quantitative analysis

Question

In Dumas method for nitrogen estimation, nitrogen is collected as:

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The **Dumas Method** is a classical technique for estimating the percentage of nitrogen in an organic compound.
- **Mechanism**: The compound is heated with Cupric oxide ($CuO$) in an atmosphere of **Carbon dioxide ($CO_2$)**. Any nitrogen present is converted to **Nitrogen gas ($N_2$)**.
- **Collection**: The gas mixture is passed through a solution of Potassium hydroxide ($KOH$), which absorbs $CO_2$. The pure nitrogen gas is collected in a graduated tube (Nitrometer) over $KOH$ solution. By measuring the volume of $N_2$ at STP, the percentage of nitrogen can be calculated.

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quantitative analysis

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