Help for GCSE Students

strider said:
Dynamic equilibrium is just another word for reversible reactions, because if you were to reverse one side over to the other in essence, the amount on each side will not change(remain balanced)
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i fink i kinda geddit it sis...tnx :D :D :D....wud giv ya reps...but de system dnt let me :(

tnx a LOT neways...i mean it :happy:

:w:
 
Assalamu alaikum

I'll rep you instead for being such a lovely sis. [MOUSE]Everybody say 'aaaw'[/MOUSE]

Sis, what examination board are you with? If it's AQA Spec A i strongly recommend that you buy their revision guide!
 
Salam,

Sister dark crystal to understand the concept of equilibrium, I recommend you grasp strongly the concept of reversible reactions.

So lets begin shall we, take your time to read:


Reversible Reactions

In a reversible reaction the products can react to produce the original reactants again

When writing chemical equations for reversible reactions, we do not use the usual one-way arrow. Instead, we use two arrows, each with just half an arrowhead - the top one pointing right and the bottom one pointing left ( mind my arrows).

ammonium chloride <--
--> ammonia + hydrogen chloride

The equation shows that:

(*)ammonium chloride (a white solid) can break down to form ammonia and hydrogen chloride
(*) ammonia and hydrogen chloride (colourless gases) can react to form ammonium chloride again.


Have a break and then continue!
 
Now, onto equilibrium... :)

First I want you to understand the two main terms:

Reactant: A reactant is a substance put together with another subtacnce to undergo a chemical reaction.

Product: [I]A product is a substance formed in a chemical reaction.[/I]


So,

If a chemical reaction happens in a container in which one or more of the reactants or products can escape, you have an open system.

If a chemical reaction happens in a container in which none of the reactants or products can escape, you have a closed system

Reversible reactions that happen in a closed system eventually reach an equilibrium.

Chemical equilibrium

In a chemical equilibrium the concentrations of reactants and products do not change. But the forward and reverse reactions have not stopped - they are still going on, but at the same rate as each other.


Imagine.....


walking the wrong way on an escalator - at the same speed as the escalator, but in the opposite direction. Your legs would still be walking forwards, and the escalator would continue to move backwards - but the net result would be that you stay in exactly the same place. This is what happens in an equilibrium. .......I also suggest you try this as it will help you grasp the concept. Lets go shopping!! :)

Let me know if you understand this so far....
 
:sl:

yup i understand that far...and the examplle in ma book is the same as de person walkin n de escalator goin downwards. but ders a picture dat shows de person nearer to de top n anoda 1 dat shows de person neareer to de bottom. in dat place de text book mention stuff abt de equillibrium lyin to de right or de left...n das wt i dnt get :uuh:

tnx for de xplanation abuv tho...i undrstand dat completely alhamdulillah :D

:w:
 
and guys if u do cwap in ya mock GCSEs jus remeber dont let it get U donw, I got Gz n Fz n Uz IN MA MOCKS, CAME OUT TOPS IN THE REAL THING THO

and pick subjects which U enjoy dont jus do wat ya m8s are duin

n remember to REVIIIIIIIIIZZZZZZZZZZZZZZ :uhwhat
 
Ameeratul Layl said:
Now, onto equilibrium... :)

First I want you to understand the two main terms:

Reactant: A reactant is a substance put together with another subtacnce to undergo a chemical reaction.

Product: [I]A product is a substance formed in a chemical reaction.[/I]


So,

If a chemical reaction happens in a container in which one or more of the reactants or products can escape, you have an open system.

If a chemical reaction happens in a container in which none of the reactants or products can escape, you have a closed system

Reversible reactions that happen in a closed system eventually reach an equilibrium.

Chemical equilibrium

In a chemical equilibrium the concentrations of reactants and products do not change. But the forward and reverse reactions have not stopped - they are still going on, but at the same rate as each other.


Imagine.....


walking the wrong way on an escalator - at the same speed as the escalator, but in the opposite direction. Your legs would still be walking forwards, and the escalator would continue to move backwards - but the net result would be that you stay in exactly the same place. This is what happens in an equilibrium. .......I also suggest you try this as it will help you grasp the concept. Lets go shopping!! :)

Let me know if you understand this so far....
Click to expand...

:uhwhat
 
~pInK cHiCk~ said:
and guys if u do cwap in ya mock GCSEs jus remeber dont let it get U donw, I got Gz n Fz n Uz IN MA MOCKS, CAME OUT TOPS IN THE REAL THING THO

and pick subjects which U enjoy dont jus do wat ya m8s are duin

n remember to REVIIIIIIIIIZZZZZZZZZZZZZZ :uhwhat
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:uuh: :uuh:...o-keee...lol sis gud advice :thumbs_up :) altho it kinda took me a few mins b4 i cud wrk out wtz ritten...lol

:w:
 
Salaam,

JazakAllah for making the thread Ameeratul Layl! .... I would be in here quite a bit....if my dad wasn't limiting my time on the comp! :cry:

But if I do need help...(which I definitely will :)) then inshAllah I'll come here and post down a looooongg list of questions!

Wassalam :peace:
 
nazia said:
Salaam,

JazakAllah for making the thread Ameeratul Layl! .... I would be in here quite a bit....if my dad wasn't limiting my time on the comp! :cry:

But if I do need help...(which I definitely will :)) then inshAllah I'll come here and post down a looooongg list of questions!

Wassalam :peace:
Click to expand...


:sl:
No problem sister. Just make sure you are prepared to work hard and I will do my bit in helping,inshAllah.

Sister with the 'equilibrium' problem, do you undertand the topic or do O need to go over it again?

:w:
 
Salaam,

Woah...I am preparing...(my dad won't rest until I do :)) .... I already have a timetable...which is really helpful, but I find myself getting bored and coming on here. But the other sisters...(such as Umm Shaheed and Taggy all know that I haven't been on as much as usual...so Alhamdulillah for that! )

I'm sorted in maths, and english....have a lot of problems in french! :cry: But everytime I enter the french thread my head feels like it's going to burst! :cry: Anyone want to be my very own french tutor?
Wassalam :peace:
 
Salaam,

In my school you're not allowed to drop languages! I thought french would be easy.....but it turns out it sounds like "blah blah blah" :cry:

Wassalam :peace:
 
:sl:

nazia said:
Salaam,

In my school you're not allowed to drop languages! I thought french would be easy.....but it turns out it sounds like "blah blah blah" :cry:

Wassalam :peace:
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Yh I couldnt have dropped it either but luckly I moved to a madrassah :)
 
Taymullah said:
:sl:



Yh I couldnt have dropped it either but luckly I moved to a madrassah :)
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Salaam,

I don't think I can move to a madrassah just to drop french though...:cry:

Can't you buy those tapes that play when you sleep, and by the next day you're speaking french?

Wassalam :peace:
 
nazia said:
Salaam,

Can't you buy those tapes that play when you sleep, and by the next day you're speaking french?

Wassalam :peace:
Click to expand...

LOL :giggling:

errrrrrrrrrr.............maybe U could give it try and see what happens :)
 

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