Thursday
April 24, 2014

Homework Help: chemistry 12

Posted by Natalie on Monday, November 20, 2006 at 8:30pm.

sry, a misprint. its:

O2+2F2 <--> 2OF2

The question is looking for Kc.

2.50 mo of oxygen and 2.50 mol of fluorine gas are placed in a 2.00L glass container at room temperature. The container is heated to 400K and the following equilbirum is established:

O2+2F2 <--> 2OF

If 37.2% of the fluorine reacts, what is the value of the equilibrium constant?

Check your equation. It isn't balanced. And do you want Kc or Kp?

Initially.
(O2) = 2.50 mols/2.00L = 1.25 M
(F2) = 2.50 mols/2.00L = 1.25 M
(OF2) = 0

1 mol F2 produces 1 mol OF2 in the reaction; therefore, 37.2% of the 1.25 mols F2 reacted and at equilibrium we have (OF2)= 1.25 x 0.372 = ??
(F2) = 1.25 - what reacted.
(O2) = 1.25 - 1/2 OF2.

Then solve for Kc.
I hope this helps. Check my thinking. Check my arithmetic.

Yup, that seems just about right. Thnk you.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Chemistry - Fluorine reacts with oxygen to yield oxygen difluoride. 2 F2(g) + O2...
Chemistry - Fluorine reacts with oxygen to yield oxygen difluoride. 2 F2(g) + O2...
CHEMISTRY - At a certain temperature , 0.960 mol of SO3 is placed in a 3.50 L ...
AP Chemistry - Given: 2N2(g) +O(2) --> 2N2O(g) Kc =1.2x10^(-35) N2O4(g) -->...
Chemistry - At a certain temperature, 0.900 mol of SO3 is placed in a 2.00-L ...
chemistry - Given Kc values: N2(g)+1/2 O2(g)<->N2O(g) Kc=2.7* 10^-18 N2O4(...
chemistry - Calculate the number of moles in 75.0 g of oxygen gas. A. 2.34 mol ...
Chemistry - At a certain temperature, 0.700 mol of SO3 is placed in a 3.50-L ...
chemistry - 1.00 mol of A and 2.00 mol of B are placed in a 5 Liter container. ...
Chemistry....Please help - Given the equilibrium constant values: 1.N2(g)+ 1/2O2...

Search
Members