April 22,2009

In today's class:
A.) Ms.K gave us 20 minutes or more to finish the questions from our Lab Sheet
B.) We went over the Questions 1-2 from Lesson 4 assignment (yellow sheets)
C.) Received Handouts
-Concentration versus time Graph
-Chapter 18 study guide (answer pages 1 to 3)

The following were the answers from Lesson 4 assignment:


1.For the reaction
PCl3(g) + Cl2(g) PCl5(g) ΔH = –92.5 kJ
predict the effect on the position of the equilibrium that results from

a) increasing the total pressure by decreasing volume. shift right
b) injecting more Cl2 gas without changing the volume. shift right
c) increasing the temperature. shift left (increasing the temperature tends to favour the endothermic reaction)
d) increasing the volume of the container. shift left
e) adding a catalyst. Adding a catalyst does not affect the equilibrium position

2.For the reaction
CH4(g) + H2O(g) + 49.3 kJ CO(g) + 3 H2(g)
predict the effect on the position of the equilibrium that results from

a) increasing temperature. shifts right (Increasing temperature favours the endothermic reaction)
b) decreasing temperature. shift to the left
c) decreasing the pressure.shifts equilibrium to the right
d) decreasing the volume of the container.shifting equilibrium to the left
e) adding a solid drying agent such as CaCl2 which reacts with H2O(g). shift towards the left


That's what we all did for today's class....
next scribe is Larlyn.....*_*