3.12 gram of coal was Kjeldahlized and the evolved gas was absorbed in 50 ml 1


3.12 gram of coal was Kjeldahlized and the evolved gas was absorbed in 50 ml 1 N H2SO4. After the absorption,
residual acid required 6.25 ml of 0.2 N NaOH for exact neutralization. Using this data, please mention the
element that was analysed and which percent of it was present in the sample. Briefly explain what
“Kjeldahlization” means with a simplified diagram.​


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