Question
Reaction rate can be increased by all of the following actions EXCEPT which one? using an appropriate catalyst adding more solvent increasing the reactant concentrations increasing the surface area of any solid reactants increasing the temperature of the reaction Consider the hypothetical endothermic equilibrium reaction 120 kJ + A2(g)+ B2(g) doubleheadarrow 2AB(g) If we increase the temperature of the reaction, what statement would be most correct? Less AB would form. Less A and B would react. There would be no elect on any of the equilibrium concentrations. There will be an effect on equilibrium concentrations, but it is unpredictable. The value of the equilibrium constant K would increase. Use LeChatclier's Principle to predict the shift that occurs when the ammonia (NH3) concentration is decreased for the following gaseous system at equilibrium. Assume all other factors remain constant. N2 + 3H2 doubleheadarrow 2NH3 To the right To the left No effect Both right and left It is unpredictable Which equation corresponds to the equilibrium constant expression [HCI]2 / [H2] [?l]? 2HCI doubleheadarrow H2 + CI2 H2 + CI2 doubleheadarrow 2HCI 2H + 2CI doubleheadarrow 2HCI 2HCI doubleheadarrow 2H + 2CI None of these For the reaction H2(g)+ I2(g) doubleheadarrow 2HI(g). K = 50 at 460 Degree C. At equilibrium, the concentration of the HI = 2.32 M. Assuming that the concentrations of the hydrogen and iodine are identical, what are they?
Explanation / Answer
13: b, because the rate depends on the reagents concentration, if whe add more solvent we will decrease the concentration, so the rate will also decrease.
Chegg
