CHEM105 PASS Week 10
Presentation
•
Chemistry
•
University
•
Practice Problem
•
Hard
Sharrman Maran
Used 2+ times
FREE Resource
8 Slides • 3 Questions
1
Question Time
ft. Tim Tams + stock images
2
Warm up Qs
Written Qs
Your Qs
Today's PASS session
3
Multiple Choice
The concentration value of 5.0M can also be expressed as:
5.0mol
5.0mol/g
5.ml/mol
5mol/L
4
Multiple Choice
Consider the equilibrium: 2NO2(g) ↔ N2O4(g) ∆H = -58.2 kJ
At room temperature NO2 is brown and N2O4 is colourless.
When the sealed flask containing gases is submerged in cold water
The brown colour increases
The brown colour decreases
The intensity of the brown colour remains the same
. The intensity of the colour cannot be predicted
5
Multiple Choice
Ag+ ions react with Fe2+ ions according to the equation:
Ag+ (aq) + Fe2+ (aq) ↔ Ag(s) + Fe3+ (aq)
The concentration of Ag+ at equilibrium is not changed by adding:
Fe2+ (aq)
Ag(s)
Ag+ (aq)
Cl- (aq)
6
Are we feeling warm?
7
Consider the image to the right.
Using the information that you have, provide a written response to
justify whether this is a reactant, or
product favoured reaction.
In your answer you must make reference to the equilibrium constant (3 marks)
8
Provide a written response about the
substances represented by each line
that describes what is happening to
their concentration.
Your answer must include discussion of
chemical equilibrium (4 marks).
9
Consider the equation below (not the dog).
What would happen to the equilibrium if this reaction took place in a smaller container? Provide a written response that includes which way the equilibrium would shift, and reference the appropriate Gas law (3 marks)
10
Sorry, you're not done.
Now, what would happen to the equilibrium of this equation if pressure were to increase?
11
Dog says you smashed it!
Question Time
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