27. Two phases are considered to be in mutual equilibrium (A) both are at their

Question

27. Two phases are considered to be in mutual equilibrium (A) both are at their critical temperatures. (B) the mole fractions of all components are the same in each phase. (C) the temperature, pressure, and chemical potential of each comp wh each phase. (D) molecules are moving across the phase boundary 28. The rate law for A + B C is rate = k[A][BF. If [A],-1.0 M and I B],-0.00 10 M, then the rate law will be (A) pseudo-zeroth order. (B) pseudo-first order. (C) pseudo-second order (D) pseudo-third order. 29. Consider the contour diagram corresponding to the potential B C energy surface for the H+ H2 reaction when the three atoms (A, B and C) are constrained to be collinear. The point X on the diagram corresponds to the (A) steady state (B) minimum energy state. (C) degenerate state. (D) transition state 30. In heterogeneous catalysis of reactions on solid surfaces, the effectiveness of a given catalyst is not determined by the (A) bulk density of the catalyst. (B) surface roughness of the catalyst. (C) number of active sites on the catalyst surface. (D) degree of adsorption of the reactant on the catalyst surface. 31. The rate of chemical reactions depends on the total number of collisions between reactant molecules. The total number of collisions is favored by (A) smaller collision cross section and low molecular velocities. (B) smaller collision cross section and high molecular velocities. (C) larger collision cross section and low molecular velocities. (D) larger collision cross section and high molecular velocities.

Explanation / Answer

Ans 27

Option C is the correct answer

Mutually equilibrium occurs when two phases have the essentially same chemical potential, temperature and pressure

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