2. Hydrogen fluoride can be produced from elemental fluorine and hydrogen according to the reaction H2(g) + F2(g)  2HF(g). The reaction has an equilibrium constant, Kc, of 7.75 x 10 2 at a certain temperature. a. Calculate the equilibrium concentration of HF(g) if 5.750 mol of H2 and F2 are introduced into a 1.500 L flask.

The equilibrium concentration of HF is 7.15 M.

Explanation:

Molarity is calculated by using the equation:

Moles of Hydrogen gas = 5.750 moles

Volume of container = 1.500 L

Moles of fluorine gas = 5.750 moles

Volume of container = 1.500 L

For the given chemical equation:

Initially

3.833 M    3.833 M        0

At equilibrium:

(3.833-x) M   (3.833-x) M     2x

The expression of an equilibrium constant will be given as:

Solving for x:

x = 3.576 M

The equilibrium concentration of HF :

hurricanes form when warm, moist air from the ocean surface quickly rises into the atmosphere and forms storm clouds and rain. when the clouds are formed, heat is released which warms the cool air in the upper regions of the atmosphere so that the cycle can continue. which two phases of the water cycle are repeated in this process?