Explain the estimation of phosphorus and sulphur present in the organic compound

Why is a solution of potassium hydroxide used to absorb carbon dioxide evolved during the estimation of carbon present in an organic compound?

3200gm sulphur is present in

Discuss the estimation of nitrogen present in an organic compound by Dumas method. Mention the principles.

The blood red colour in the combination test of nitrogen and sulphur in organic compound is the to the formation of

Lassaigne's test is used for detection of elements N, S, X and P. The sodium fused extract is tested for these elements with appropriate reagents. The observation made in to identify the element present in the organic compound. Sulphur is organic compound on fusion with metallic sodium will be converted into

Explain the estimation of nitrogen of an organic compound by (a) Dumas method and (b) Kjeldahl's method