Lovely Professional University 2009 B.Tech Information Technology Assignment 2- chemistry - Question Paper

CHE151

Assignment two

1) compute
a) EC-C b) EC?N
?H form of CH3CN = 87.86 KJ/mole
?H form of C2H6 = -83.68 KJ/mole
?Hsub of graphite = 719.65 KJ/mole
Enthalpy of dissociation of N2 = 945.58 KJ/mole
Enthalpy of dissociation of H2 = 435.14 KJ/mole
C-H bond enthalpy = 414.22 KJ/mole

2) Write the degree of freedom for one, two, 3 phases of 1,2, and three component system.

3) Derive the phase rule for a system in which 1 compound is missing from the phase number1. There are P phases and every phase has C component other than phase number 1.

4) Draw the phase diagram of water. discuss how skaters skates on ice using this diagram. Write degree of freedom at triple point, melting curve, boiling curve and sublimation curves and also in the region.

5) For the equilibrium PCl5(g) ----PCl3+ Cl2(g) at 298 K, Kc = 1.8x10-7. What is ?Go for the reaction. R = 8.314 J/Kmole

6) describe
a)Molecularity b) Order of reaction

7) Write the unit of rate constant for
a) Zero b) first c) second d) third order of reaction.

Earning:   Approval pending.