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Overview of Chemical Fuels and Analysis by Kumud is a document available to read on EtoBox.

* 1 g of coal was kjeldahlised * NH3 gas evolved was absorbed in 50 mL of 0.1 N H2SO4 * 6.5 mL of 0.1 N NaOH was required for neutralization of excess acid * 1 mL of 0.1 N H2SO4 = 0.0014 g of N * So, 6.5 mL of 0.1 N H2SO4 corresponds to 0.0014 × 6.5 = 0.0091 g of N * % Nitrogen = Amount of Nitrogen × 100 / Weight of coal sample = 0.0091 × 100 / 1 = 0.91% Therefore, the percentage of nitrogen is

Author

Kumud

Language

EN