1.

0.3 g of an organic compound on Kjeldahl's analysis gave enough ammonia to just neutralise 30 mL of 0.IN H_(2)SO_(4) . Calculate the percentage of nitrogen in the compound.

Answer» <html><body><p></p>Solution :Weight of organic compound (w) = 0.3 g <br/> Strength of <a href="https://interviewquestions.tuteehub.com/tag/sulphuric-655420" style="font-weight:bold;" target="_blank" title="Click to know more about SULPHURIC">SULPHURIC</a> acid used (<a href="https://interviewquestions.tuteehub.com/tag/n-568463" style="font-weight:bold;" target="_blank" title="Click to know more about N">N</a>) = 0.1 N <br/> Volume of sulphuric acid used (<a href="https://interviewquestions.tuteehub.com/tag/v-722631" style="font-weight:bold;" target="_blank" title="Click to know more about V">V</a>) = 30 <a href="https://interviewquestions.tuteehub.com/tag/ml-548251" style="font-weight:bold;" target="_blank" title="Click to know more about ML">ML</a> <br/> 30 ml of 0.1 N sulphuric acid = 30 ml of 0.1 N ammonia <br/> `:. "Percentage of nitrogen" =((14 xx NV)/(1000 xx w)) xx 100=((14 xx 0.1 xx 30)/(1000 xx 0.3)) xx 100=14%`</body></html>


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