REVERSIBLE 1ST ORDER REACTION
k1
A
[]
[]
=
= 1 [] 1 []
k-1
B
(1)
If the concentration of species B=0 at the start of reaction, then we can write:
[] = []0 []
(1)
[]
= 1 [] 1 ([]0 []) = (1 + 1 )[] 1 []0
Under equilibrium condition
[]
(2)
= 0 , the equili
Tutorial -1 (Thermodynamics 1st and 2nd laws)
Problems Nos.
1. A mole of water vapor initially at 200C and 1 bar undergoes a cyclic process for which
w = 338 J. Find q for this process.
2. (a) Calculate q, w, U, and H for the reversible isothermal expansi
Heat Engine Concept
Any time a temperature difference exists between two bodies,
there is a potential for heat flow
Examples:
heat flows out of a hot pot of soup
heat flows into a cold drink
heat flows from the hot sand into your feet
Rate of heat f
1
2.1 P-V Work
2.2 Heat
2.3 The First Law of Thermodynamics
2.4 Enthalpy
2.5 Heat Capacities
2.6 Calculation of First Law Quantities
2.7 The 2nd law of thermodynamics
2.8 Heat engines
2.9 Entropy
2.10
Calculation of entropy changes
2.11 Thermochemistry
2
Tutorial Question: Electrochemical System
1. Use standard electrode potentials (Table 13.1) to find Go 298 and Ko298 for
Cu2+(aq) + Zn(s) Cu(s) + Zn2+(aq)
2. Express the emf of the cell
PtIn(s)In2(SO4)3(aq,m)Hg2(SO4)(s)Hg(l)Pt
In terms of 0 , T, and and m
Physical Chemistry (CDB 1023)
(Tutorial 3 on Catalysis)
Numerical Problems
1. For N2 adsorbed on a certain sample of charcoal at 77C, adsorbed volumes (recalculated
to 0C and 1 atm) per gram of charcoal vs. N2 pressure are
P/atm
v/(cm3/g)
3.5
101
10.0
136
Tutorial Question
Chapter 3: Phase and solution
1. For a system of NaCl (s) and NaCl(aq) in equilibrium, find f if the solid is considered to
consist of the single species NaCl and the solute species present in solution (a) is
considered to be NaCl (aq);
Tutorial 4
Chapter 4 (Chemical kinetics)
1. The rate of decay of a radioactive isotope obeys = ,where N is the number of
radioactive nuclei present at time t, and the value of the decay constant is different for
different nuclei. By analogy to the equatio