National Institute of Technology 2007 B.E Chemical Engineering Mid Semester - temr 2006 - Question Paper

N.I.T.K.
Duration: 1 hour
Ill SEM.B.TECH.-CHEMICAL ENGINEERING.

CH-200 : PROCESS computations
TEST-I

SURATHKAL
Max. Marks : 20



NOTE :- ans the subsequent. Make improper assumptions wherever necessary and state them.
1 . A solution of sulfuric acid in water contains 22.25% H2SO4 (by weight) at 15.6°C. The specific gravity of solution is 1.16. obtain the concentration of sulfuric acid in the solution in grams per liter. Also, calculate the molarity, normality and molality
of the solution.

(04)

2.An organic compound contains carbon, hydrogen and oxygen. A sample of the
compound weighing 0.660 gm, upon complete combustion provide a0.968 gm of
carbon dioxide and 0.792 gm of water. compute the mass percentage of oxygen in
the compound. ¦ (03)
3.A Stock solution contains 5000 ppm of phenol (C6H5OH) in water at 28°C. You
are needed to prepare five liters of phenolic water containing 50 ppm of phenol.
elaborate the volumes of stock solution and distilled water you will take to prepare
the needed solution? (03)

4 A gas mixture containing 60% CO2, 10% CO, 5%CH4 and 25% N2by quantity at 250°C is flowing through a pipe line under a draft of two inches of water, at a flow rate of 1500 liters per minute. calculate the density and mass Dow rate of the
mixture.
(04)

5. A mixture of nitrogen gas and benzene vapor is available at 102.6 Kpa, 26°C, and
90 m3/hr; its relative saturation is 35%. The mixture is isothermally compressed to
a final total pressure of 966.3 Kpa. compute the rate of condensation of benzene.
The vapor pressure of benzene at 26°C may be taken as 100 mm Hg. (06)

Earning:   Approval pending.