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At a certain temperature K for the reaction 2NO2  N2O4 is 7.5 liters/mole. If 2.0 moles of NO2 are placed in a 2.0-liter container and permitted to react at this temperature, calculate the concentration of N2O4 at equilibrium.

For the reaction given below, 2.00 moles of A and 3.00 moles of B are placed in a 6.00-L container.          A(g) + 2B(g)  C(g)At equilibrium, the concentration of A is 0.213 mol/L. What is the value of Kc?

Carbon disulfide and chlorine react according to the following equation:CS2(g) + 3Cl2(g)    S2Cl2(g) + CCl4(g)When 2.14 mol of CS2 and 5.85 mol of Cl2 are placed in a 2.00-L container and allowed to come to equilibrium, the mixture is found to contain 0.620 mol of CCl4. How many moles of Cl2 are present at equilibrium?

At a given temperature, a first-order reaction has a rate constant of 3.4 × 10–3 s–1. The time required for the reaction to be 44% completed is

A general reaction written as A + 2B → C + 2D is studied and yields the following data: [A]0[B]0Initial Δ[C]/Δt 0.150 M0.150 M8.00 × 10–3 mol/L·s 0.150 M0.300 M1.60 × 10–2 mol/L·s 0.300 M0.150 M3.20 × 10–2 mol/L·s What is the numerical value of the rate constant?

Consider the reaction represented by the equation  2SO2(g) + O2(g)  2SO3(g). For the system at chemical equilibrium, which of the following explains what happens after the addition of oxygen gas (assume constant temperature)?

Please mark your paper A1.  Show your work on the free response packet and then box your answers.  Draw a reaction diagram for an endothermic reaction.  Label the following reactants products ∆Hrxn Ea transition state Show how it would change if it contained a catalyst.   

The reaction 3A + 4B → products is second order in A and second order in B. What is the overall order of the reaction?

A chemical reaction that is first order in X is observed to have a rate constant of 1.7 × 10–2s–1. If the initial concentration of X is 1.0 M, what is the concentration of X after 190 s?

A 3.00-liter flask initially contains 3.00 mol of gas A and 1.50 mol of gas B. Gas A decomposes according to the following reaction:          3A  2B + CThe equilibrium concentration of gas C is 0.146 mol/L. Determine the value of the equilibrium constant, K.