Which of the following statements is TRUE? Select one: O Increasing the temperature will speed up the rate of reaction by altering the reaction mechanism. Adding a catalyst will speed up the rate of reaction by providing the reactant molecules with more energy. An elementary step has one intermediate. After 2 half-lives, the reactant concentration drops to 1/4 the initial concentration. The larger the activation energy, the faster the reaction rate.

O KINETICS AND EQUILIBRIUM Deducing a rate law from initial reaction rate data Some measurements of the initial rate of a certain reaction are given in the table below. N2 H, initial rate of reaction 2.21 M 2.33 M 35.0 M/s 2.21 M 4.98M 160. M/s 7.27 M 2.33 M 379. 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 O k = | Explanation Check O 2021 McGraw-Hill Educ P Type here to search III

The rate of reaction was measured during a chemical reaction. After the first 3 seconds, the rate of reaction was 1.8 x10−6 M/s. Which of the following would you expect after another 3 seconds?  The rate would be lower, and the concentration of products would be higher.  The rate would be lower, and the concentration of products would be lower.  The rate would be higher, and the concentration of products would be higher.  The rate would be higher, and the concentration of products would be lower

Some measurements of the initial rate of a certain reaction are given in the table below. [N₂] [H₂] initial rate of reaction 1.36M 2.01 M 0.639 M/s 1.36M 4.86M 3.74 M/s 0.400M 2.01 M 0.188 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 2 significant digits. Also be sure your answer has the correct unit symbol. rate = k -0 - x10 Ś

Some measurements of the initial rate of a certain reaction are given in the table below. [N₂] H₂ initial rate of reaction 0.945M 1.74M 1.00 × 106 M/s 0.945M 0.395M 0.458M 1.74M 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 2 significant digits. Also be sure your answer has the correct unit symbol. rate = k -0 5.15 × 10 M/S 4.85 × 105 M/s k = x10 X S

Deducing a rate law from initial reaction rate data Some measurements of the initial rate of a certain reaction are given in the table below. [H₂] [2] initial rate of reaction 1.96M 1.54M 0.939 M 1.54M 1.96M 0.618M 4.00 × 104 M/s 1.92 × 10 M/s 1.61 × 104 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 2 significant digits. Also be sure your answer has the correct unit symbol. rate = k] k = 0 □·□ 吕

Typical Chemical Potential Energy (PE) Diagram for an Exothermic Reaction A catalyst provides an alternate pathway for a reaction to occur. The alternate pathway has a lower activation energy (AE), meaning that the reactant molecules do not need to collide with as much energy in order for a reaction to occur, so more collisions result in a reaction, so the reaction rate is faster. Chemical Potential Energy (Enthalpy) Note that adding a catalyst does not change the amount of energy released (AH) for the reaction. Activation Energy (AE) with a catalyst PE of Reactants AH PE of Products Rxn Progress What effect does a catalyst have on the stoichiometry of the reaction? What effect does the catalyst have on the mechanism of a reaction? AE wlo a catalyst

Some measurements of the initial rate of a certain reaction are given in the table below. [N₂] H₂ initial rate of reaction 1.23M | 2.41M 95.0M/s 0.335M 2.41 M 25.9 M/s 1.23 M 6.52M 695. 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 <= 0 Ś ? X

For a given reaction, how will the rate constant (k) change with temperature? The rate constant will be the same at all temperatures. The rate constant will increase as temperature increases. The rate constant will decrease as temperature increases. How the rate constant changes will depend on what the specific reaction is.

Some measurements of the initial rate of a cetain reaction are given in the table below. [N2] [H2] initial rate of reaction 1.21 M 1.95 M 10.0 M/s 0.561 M 1.95 M 2.15 M/s 1.21 M 0.214 M 0.120 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.