NEET
Chemistry
NEET PYQ-Organic Chemistry Some Basic Principles
question_answer
In Dumas method of estimation of nitrogen 0.35 g of an organic compound gave 55 mL of nitrogen collected at 300 K temperature and 715 mm pressure. The percentage composition of nitrogen in the compound would be (Aqueous tension at \[300\text{ }K=15\text{ }mm\]) [AIPMT (S) 2011]
A)16.45
B)17.45
C)14.45
D)15.45
Correct Answer:
A
Solution :
[a] Where, pressure of at STP = 760 mm =Temperature of at STP = 273 K ? Volume of at STP (By gas equation) where,(pressure at which collected). aqueous tension of water = 15 mm volume of moist nitrogen in nitro meter % of nitrogen in given compound