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?
(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
Chemistry #27 - Given that: H2 (g) + F2 (g) ---> 2HF (g) H(rxn)= -546.6 kJ ...
Chemistry - 2KClO3 --> 2KCl + 3O2 What mass of O2 can be made from heating ...
college kinetics chem - what is the rate law for 2OF2 yeilds O2 + 2F2
chemistry - Calculate the number of moles in 75.0 g of oxygen gas. A. 2.34 mol ...
chemistry - At 25 C the following heats of reaction are known: 2CIf (g)+ O2(g...
General Chemistry - The Henry's Law constant for O2 in water is 1.28 x 10 ^ -3 M...
Chemistry (URGENT) - Balance the following equations. 3. C12H22O11 + O2 = CO2 + ...
Chemistry 12 - Is O2(g) <---> O2(aq) an endothermic/exothermic reaction, ...
chemistry - Arrange the species O2, O2^+, O2^-, and O2^2- in order of increasing...
Chemistry - Arrange the species O2, O2^+, O2^-, and O2^2- in order of increasing...