Which of the following options correctly describes the units of K for a reaction? Multiple choice question. K has units of mol/L⋅s because K is a ratio of rate constants. K has units of mol/L because its expression involve concentrations. K is usually quoted without units. K has units of M2 since its expression involves a product of concentration values.

Some measurements of the initial rate of a certain reaction are given in the table below. [H,] 2 initial rate of reaction 1.50M 0.382М 20.0M/s 3.30M 0.382м 44.0M/s 1.50M| 0.647M 33.9 M/s Use this information to write a rate law for this reaction, and calculate the value of the rate constant k. Round your value for the rate constant to 3 significant digits. Also be sure your answer has the correct unit symbol. rate = k || x10 k =

Which one of the following statements is False?     The rate constant depends on the activation energy of a reaction.     A catalyst lowers the activation energy of a reaction.     Rate constants are not temperature dependent.

Consider the following general reaction for which gases A and B are mixed in a constant volume container: A(g) + B(g) -> C(g) + D(g) Match what happens to the rate of the reaction under the following changes: (consider each change separately) v all of gas B is removed from the container more gas A is added to the container the temperature of the container is increased there is no change to the reaction rate ya catalyst is added to the container I. the reaction proceeds at a faster rate v gas D is also added to the container the reaction proceeds at a slower rate II. some of gas B is removed from the container Iy the reaction does not proceed at all the volume of the container is increased

The reaction described by the equation 0,(g) + NO(g) - O2(g) + NO, (g) > has, at 310 K, the rate law rate of reaction k[O,][NO] k = 3.0 x 106 M-1.s-1 Given that [O,] = 2.0 × 10-4 M and [NO] = 4.0 × 10-³ M at t = 0, calculate the rate of the reaction at t = 0. rate: M/s What is the overall order of this reaction? 2 3 1

Draw the order of reaction graphs (reaction rate vs the concentration) for [NO] and [H2]. Explain the difference between the two graphs

Initial-rate data at a certain temperature is given in the table for the reaction SO₂Cl₂(g) → SO₂(g) + Cl₂ (g) - [SO₂Cl₂], (M) k = 0.100 0.200 0.300 Initial rate (M/s) 2.30 x 10-6 4.60 x 10-6 6.90 x 10-6 Determine the value and units of the rate constant. MacBook Pro units: Question Source: McQuarrie, Rock, And Gallogly 4e - General Chemi

Match the quantities that yield straight lines for the given types of reactions molarity vs. time zero order rate equations inverse molarity vs. time secondorder rate equations In molarity vs. time firstorder rate equations inverse molarity vs. inverse time not a straight line for any type & へ へ

For the reaction A → products, concentration and time data were collected. t (s) [A] (M) Enter these data into the graphing tool to determine the reaction order. 0.0 3.40 25.0 2.28 50.0 1.53 75.0 1.02 Graphing Tool Clear All Data [A] vs. t In[A] vs. t 1/[A] vs. t t [A] In[A] 1/[A] 3.4 3.4 1.223775 0.294118 25 2.28 0.824175 0.438596 2.822 + 50 1.53 0.425268 0.653595 2.244 + 75 1.02 0.019803 0.980392 1.666 - 1.088 - 0.51 - 15 30 45 60 75 t y=-0.03156 x + 3.241000 2= 0.971 Add Row 10 total rows What is the reaction order? O 1 Calculate the concentration of A after 127 s. [A]127 s = M [V)