Le Chateleir`s Principle

Question

Please check if my answers are right and i dunt know some of them:

Consider the following system at equilibrium:

A(aq)+B(aq) <---> 2C(aq)

Classify each of the following actions by whether it causes a leftward shift, a rightward shift, or no shift in the direction of the net reaction.

1.Increase A- Right
2.Increase B- Right
3.Increase C- Left
4.Decrease A- Right
5.Decrease B- Right
6.Decrease C- lEft
7.Double A and Halve B- NO Shift
8. Double both B and C- NO shift

2.The following system is at equilibrium:

X(s) +3Y(g)<---> Z(g)}

Classify each of the following actions by whether it causes a leftward shift, a rightward shift, or no shift in the direction of the net reaction.

1.Decrease the Volume
2.Increase the Volume
3.Add more X- Right
4.Remove more X- Left

Answer 1

on the first, 4,5,6 are wrong. Think out why.

on the second, YOu did not show any thinking on 1,2. Right on 3,4

Answer 2

Bob Pursley and I have agreed that the answer to 3 and 4 on #2 should be no change since X is a solid. Adding or removing X will not change the concentration.

Answer 3

Thank you i got it

Answer 4

Classify each of the following actions by whether it causes a leftward shift, a rightward shift, or no shift in the direction of the net reaction.

N2(g)+ O2(g)=2NO(g)

Answer 5

For a certain chemical reaction, ΔH∘=−156kJ. Assuming the reaction is at equilibrium, classify each of the following actions by whether it causes a leftward shift, a rightward shift, or no shift in the direction of the net reaction.

Answer 6

The following system is at equilibrium:
A(s)+4B(g)⇌C(g)
Classify each of the following actions by whether it causes a leftward shift, a rightward shift, or no shift in the direction of the net reaction. (Add more A)(Remove some A)(Double the volumen)(Halve the volumen)

Answer 7

Leftward Shift- double the volume
Rightward shift- half the volume
No shift - remove A and add A

Answer 8

I have agreed with John on the volume X questions.

Answer 9

For the chemical reaction ◇H=-156kJ

Increase temp- left
Decrease temp- right.

Answer 10

For the reaction
N2(g)+O2(g)⇌2NO(g)

classify each of the following actions by whether it causes a leftward shift, a rightward shift, or no shift in the direction of the reaction.