Category: Uncategorized

Which of the following statements is true if reaction quotient (Q) is greater than equilibrium constant (K)?

At 800 K, the equilibrium constant, Kp, for the following reaction is 3.2 × 10–7. 2 H2S(g) 2 H2(g) + S2(g) A reaction vessel at 800 K initially contains 3.00 atm of H2S. If the reaction is allowed to equilibrate, what is the equilibrium pressure of S2?

What is the Kc equilibrium-constant expression for the following equilibrium? NiO(s) + H2(g) Ni(s) + H2O(g)

For the equilibrium PCl5(g) PCl3(g) + Cl2(g), Kc = 2.0 × 101 at 240°C. If pure PCl5 is placed in a 1.00-L container and allowed to come to equilibrium, and the equilibrium concentration of PCl3(g) is 0.50 M, what is the equilibrium concentration of PCl5(g)?

The mechanism of a chemical reaction is given below.   (CH3)3CCl → (CH3)3C+ + Cl– (slow)   (CH3)3C+ + OH– → (CH3)3COH (fast) Which of the following statements concerning the reaction is/are correct?   1. The overall balanced reaction is: (CH3)3CCl + OH– → (CH3)3COH + Cl–   2. Hydroxide ion is a reaction intermediate.   3. The following rate law is consistent with the mechanism: rate = k[(CH3)3CCl]OH–].

Below is a proposed mechanism for the decomposition of H2O2. H2O2 + I– → H2O + IO– slow H2O2 + IO– → H2O + O2 + I– fast Which of the following statements is incorrect?

For a certain reaction of the general form aA → products, a plot of the experimental data of ln[A] versus time is linear. What is the reaction order with respect to the reactant (A)?

For the equilibrium PCl5(g) PCl3(g) + Cl2(g), Kc = 4.0 at 228°C. If pure PCl5 is placed in a 1.00-L container and allowed to come to equilibrium, and the equilibrium concentration of PCl5(g) is 0.19 M, what is the equilibrium concentration of PCl3?

I _______________ do my washing, because my mother does it for me.

At 7pm yesterday, we _______ (listen) to music.