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In: Chemistry

For each of the following cases, identify the order with respect to the reactant, A. CASE...

For each of the following cases, identify the order with respect to the reactant, A.

CASE (A------------------->PRODUCTS) ORDER

The half-life of A is independent of the initial concentration of [A]. Order number___

A twofold increase in the initial concentration of A leads to a fourfold increase in the initial rate. Order number____

A twofold increase in the initial concentration of A leads to a 1.41-fold increase in the initial rate. Order number_____

The time required for [A] to decrease from [A]0 to [A]0/2 is equal to the time required for [A] to decrease from [A]0/2 to [A]0/4. Order number______

The rate of decrease of [A] is a constant.

Order number______

b) The activation energy for a particular reaction is Ea = 15.30 kJ. What percentage of the molecules are at or above the activation energy at 500.0 K?

Solutions

Expert Solution

For each of the following cases, identify the order with respect to the reactant, A.

CASE (A------------------->PRODUCTS) ORDER

The half-life of A is independent of the initial concentration of [A]. Order number is 1

Note: For first order reaction, the half-life of A is independent of the initial concentration of [A].

A twofold increase in the initial concentration of A leads to a fourfold increase in the initial rate. Order number is 2.

Note:

A twofold increase in the initial concentration of A leads to a 1.41-fold increase in the initial rate. Order number is 0.5.

The time required for [A] to decrease from [A]0 to [A]0/2 is equal to the time required for [A] to decrease from [A]0/2 to [A]0/4. Order number 1.

The half-life of A is independent of the initial concentration of [A].

For first order reaction, the half-life of A is independent of the initial concentration of [A].

The rate of decrease of [A] is a constant.

Order number is 0.

For zero order reaction rate

b) The activation energy for a particular reaction is Ea = 15.30 kJ. What percentage of the molecules are at or above the activation energy at 500.0 K?

queen_honey_blossom answered 1 year ago

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