The units of \"reaction rate\" are: A. M^1 s^1 = 1/M-s B. M^2 s^2 = 1/M^2-s C. s
ID: 527474 • Letter: T
Question
The units of "reaction rate" are: A. M^1 s^1 = 1/M-s B. M^2 s^2 = 1/M^2-s C. s^1 = 1/s D. M^2 s^1 = M^2/s E. Ms^1 = M/s For the hypothetical reaction: A + 3B 2C the rate of appearance of C given by (D[C]/Dt) may also be expressed as: A. D[C]/Dt = D[A]/Dt B. D[C]/Dt = -(3/2) D[B]/Dt C. D[C]/Dt = (2/3) D[B]/Dt D. D[C]/Dt = -(1/2)D[A]/Dt For the hypothetical reaction: A + 3B 2C The rate can be expressed as: A. rate middot = D[A]/Dt B. rate = -D[C]/Dt C. rate = (-3)/(D[B]/Dt) D. rate = (1/2) (D[C]/Dt) E. rate = 91/3) (D[B]/Dt) When the concentrations of reactant molecules are increased, the rate of reaction increases the best explanation for this phenomenon is that as the reactant concentration increases. A. the average kinetic energy of molecules increases B. the frequency of molecular collisions increases. C. the rate constant increases D) the actuation energy increases. E. the order of reaction increases. Appropriate units for a 2nd-order rate constant are: A. M/s B.1/M middot s C. 1/s D. 1/M^2 middot s Nitric oxide gas (NO) reacts with chlorine gas according to the equation NO + 1/2 CI_2 NOCI The following initial rates of reaction have been measured for the given reagent concentrations Which of the following is the rate law (rate equation) for this reaction? A. rate = k[NO] B. rate = k[NO][CI_2]^1/2 C. rate = k[NO][CI_2] B. rate = k[NO]^2 [CI-2] E. rate = k[NO]^2 [CI_2]^2Explanation / Answer
Q1.
reaction rate = how fast the reaction goes
we need to idnetify --> change of concentration per unit time
therefore
reaciton rate --> moles / liter-second or --> M/s
best answer shown is E
Q2.
the reaction can relate C vs.
C --> -2*dA/dt
C --> -3/2*dB/dt
choose only B
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