3 [easy] Eqlibrium qstns

[perfectscore]

a. What are some COMMON equilibrium aqueous that are used in equilibrium questions?
b. how do u use le chartiers principle to demonstrate the colour change in various stages of a reaction? i.e. how would you describe the changeS?
c. If the concentrations of ions changes; what sort of graph would you draw? is it those V-shaped graphs turned on the side?
Thanks!

[ganges]

a. you dont have to know it.

b. first u have to determine which way is exothermic and which way is endothermic.

If the pressure increase it swings to the exothermic side, decrease- endothermic.
   
If temperature increases it swings to the endothermic and exothermic if decreases.
 
WHen you have determined this just figure out the actual coulors of the substances that side has SWUNG TO. Remember according to the LE chatt(somthing) principle, it initially opposes this change, and then swings to this side.

For eg :

A+ B > C  (exothermic reaction)

If say A is red and C is colourless
and you increase the pressure, according to my notes, it would swing to the exothermic side, therefore it would BECOME coulourless(c), again, it would initially become red b4 becoming coulourless as it partially opposes this change.

[ganges]

i am not sure wat c) means........

[Mao]

b. first u have to determine which way is exothermic and which way is endothermic.

If the pressure increase it swings to the exothermic side, decrease- endothermic.
  
If temperature increases it swings to the endothermic and exothermic if decreases.
 
WHen you have determined this just figure out the actual coulors of the substances that side has SWUNG TO. Remember according to the LE chatt(somthing) principle, it initially opposes this change, and then swings to this side.

For eg :

A+ B > C  (exothermic reaction)

If say A is red and C is colourless
and you increase the pressure, according to my notes, it would swing to the exothermic side, therefore it would BECOME coulourless(c), again, it would initially become red b4 becoming coulourless as it partially opposes this change.

what, pressure/concentration/volume are associated with number of particles, not enthalpy. it doesn't really matter if it is exothermic or endothermic, you just gotta keep in mind the pressure/concentration/volume [they all link together]

when the density of particles in a system is increased, the system will try to balance it by decreasing this density [le chatelier's principle], hence the position of the equilibrium will shift to the side with less molecules

vice versa.

[Mao]

a. What are some COMMON equilibrium aqueous that are used in equilibrium questions?
b. how do u use le chartiers principle to demonstrate the colour change in various stages of a reaction? i.e. how would you describe the changeS?
c. If the concentrations of ions changes; what sort of graph would you draw? is it those V-shaped graphs turned on the side?
Thanks!

a) generally: , i.e. pressure of gas/concentration of gas dissolved. (checkpoints P40)

c) what do you mean by concentrations of ions change?

[perfectscore]

yeh, but in regards to question a; i want to know some common aqueous one's so i can practice them. is Br common?

[Mao]

yeh, but in regards to question a; i want to know some common aqueous one's so i can practice them. is Br common?

i do not understand what you are saying.

aqueous as in what is aqueous? dissolving solids equilibrium? dissolving gas equilibrium? precipitation?

[perfectscore]

say u have two ion concentrations; products and reactants; what/how will they change?

[perfectscore]

as in aqueous solution

[Mao]

just like any other equilibrium reactions. except these ones happen to have a charge on them.

[Collin Li]

Your questions seem to demand a general answer for things that are simply not generalisable.

For example, we cannot tell you about the behaviour of common aqueous reagents, or how the colour changes without knowing the particular scenario. It depends on the reaction, and the colours of the species involved (which would be given to you). To determine what would happen, you must use the principles of equilibrium.

The principles of equilibrium are quite straightforward, and once you understand them, you should have no problem dealing with these questions. Learn Le Chatelier's principle, and ask specific questions so that we can target where your misunderstandings are.

[ganges]

b. first u have to determine which way is exothermic and which way is endothermic.

If the pressure increase it swings to the exothermic side, decrease- endothermic.
  
If temperature increases it swings to the endothermic and exothermic if decreases.
 
WHen you have determined this just figure out the actual coulors of the substances that side has SWUNG TO. Remember according to the LE chatt(somthing) principle, it initially opposes this change, and then swings to this side.

For eg :

A+ B > C  (exothermic reaction)

If say A is red and C is colourless
and you increase the pressure, according to my notes, it would swing to the exothermic side, therefore it would BECOME coulourless(c), again, it would initially become red b4 becoming coulourless as it partially opposes this change.

what, pressure/concentration/volume are associated with number of particles, not enthalpy. it doesn't really matter if it is exothermic or endothermic, you just gotta keep in mind the pressure/concentration/volume [they all link together]

when the density of particles in a system is increased, the system will try to balance it by decreasing this density [le chatelier's principle], hence the position of the equilibrium will shift to the side with less molecules

vice versa.

Yeh i just realised that today.......

[perfectscore]

realised what?

[Mao]

realised what?

some part of me tells me you haven't even read our responses in full.

[ganges]

realised what?

some part of me tells me you haven't even read our responses in full.

b. first u have to determine which way is exothermic and which way is endothermic.

If the pressure increase it swings to the exothermic side, decrease- endothermic.
  
If temperature increases it swings to the endothermic and exothermic if decreases.
 
WHen you have determined this just figure out the actual coulors of the substances that side has SWUNG TO. Remember according to the LE chatt(somthing) principle, it initially opposes this change, and then swings to this side.

For eg :

A+ B > C  (exothermic reaction)

If say A is red and C is colourless
and you increase the pressure, according to my notes, it would swing to the exothermic side, therefore it would BECOME coulourless(c), again, it would initially become red b4 becoming coulourless as it partially opposes this change.

what, pressure/concentration/volume are associated with number of particles, not enthalpy. it doesn't really matter if it is exothermic or endothermic, you just gotta keep in mind the pressure/concentration/volume [they all link together]

when the density of particles in a system is increased, the system will try to balance it by decreasing this density [le chatelier's principle], hence the position of the equilibrium will shift to the side with less molecules

vice versa.

Yeh i just realised that today.......

I meant the teacher cleared up the misconception at skool......