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### Equilibruim Assessment

Posted: Wed Mar 13, 2019 11:23 pm
A mixture initially consisting of 0.250 N2 (g) and 0.500 M H2 (g) reacts to form NH3 (g) which is 0.15 M NH3 (g) at equilibrium. Calculate the concentration of N2 (g) at equilibrium for the reaction N2(g) + 3H2(g) ⇌ 2NH3(g)

can someone help me find the concentration of N2? Above is everything that is given in the problem.

### Re: Equilibruim Assessment

Posted: Wed Mar 13, 2019 11:57 pm
You should try using an ICE chart using the initial concentrations given as well as the concentration of NH3 at equilibrium. Hope this helps!

### Re: Equilibruim Assessment

Posted: Thu Mar 14, 2019 12:03 am
Thank you!!

### Re: Equilibruim Assessment

Posted: Thu Mar 14, 2019 12:51 am
don't forget if the x value is very small (i.e. less than 10^-3) you can ignore the x when subtracting it from another value!

### Re: Equilibruim Assessment

Posted: Thu Mar 14, 2019 4:32 am
to add on to the x being small, if it is less than 5% of the initial value, then x is negligible when adding or subtracting from a number

### Re: Equilibruim Assessment

Posted: Thu Mar 14, 2019 3:34 pm
Ethan Breaux 2F wrote:don't forget if the x value is very small (i.e. less than 10^-3) you can ignore the x when subtracting it from another value!

I thought if K is less than 10^-3 then we can estimate? Not x?