Re: chemistry equilibrium

From: Mohammed Farooq (farooq_w_at_hotmail.com)
Date: 09/30/04 

Date: 30 Sep 2004 05:11:33 -0700

hetys@hotmail-dot-com.no-spam.invalid (thestudentroom) wrote in message news:<415b467d$1_2@127.0.0.1>...
> 2NO2(g) <=> N2O4(g)
>
> 138g of N2O4 were put into a vessel of volume 4.00 dm^3. At
> equilibrium 17.25g of NO2 were present. Calculate
> a) the no. of moles initially present and the no. of moles of NO2 at
> equilibrium
> b)the no. of moles of each component at equilibrium
> C)the total no. of moles of all components present
> d)the fractions of each
> e)if the total pressure is 10^6Pa the partial pressure of each
> f)Kp for equilibrium
> g) use your data from b) to find the concentration of each component
> in mol dm^(-3)
> h)find Kc for this equilibrium

Which part of the question is puzzling you? Remember that nobody would
solve the question here, rather many will guide you in the difficult
part. All you need to know is the concept of moles, partial pressure,
Kc and Kp. Go through the sample solved problems given in the text.

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