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An organic compound on qualitative analy...

An organic compound on qualitative analysis was found to contain C, H, N and O. 1.0g of it on oxidation with CuO and oxygen gave 1.239g of `CO_(2)` and 0.1269g of `H_(2)O`. 2g of the sample was digested with concentrated sulphuric acid and the residue was distilled after the addition of excess solution of sodium hydroxide. The ammonia evolved was absorbed in 50mL of 1.0N sulphuric acid. The resulting solution was diluted to 500mL in a measuring flask. 25mL of this solution required 21.8mL of 0.05N NaOH for complete neutralisation. Calculate the empirical formula of the compound.

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`(C_(2)HNO_(2))`
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