Chemical Kinetics

Chemical Kinetics

12th Grade

25 Qs

quiz-placeholder

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Chemical Kinetics

Chemical Kinetics

Assessment

Quiz

Science

12th Grade

Hard

NGSS
HS-PS1-5, HS-PS1-6, HS-PS1-4

Standards-aligned

Created by

Lisa Thompson

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25 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What will be the fraction of molecules having energy equal to or greater than activation energy, Ea?

K

A

Ae-Ea/Rt

e-Ea/Rt

Tags

NGSS.HS-PS1-5

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which among the following is a false statement?

Rate of zero order reaction is independent of initial concentration of reactant.

Half life of a third order reaction is inversely proportional to square of initial concentration of the reactant.

Molecularity of a reaction may be zero or fraction.

For a first order reaction, t1/2=0.693K

Tags

NGSS.HS-PS1-5

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following statements about the catalyst is true?

A catalyst accelerates the rate of reaction by bringing down the activation energy.

A catalyst does not participate in reaction mechanism.

A catalyst makes the reaction feasible by making ∆G more negative.

A catalyst makes equilibrium constant more favorable for forward reaction.

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The half life of the first order reaction having rate constant K = 1.7 x 10-5s-1 is

12.1 h

9.7 h

11.3 h

1.8 h

Tags

NGSS.HS-PS1-5

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

According to the results of Experiment 1, for any given catalyst, as the temperature was increased, the number of cycles needed to complete the reaction:

increased only.

decreased only.

increased, then decreased.

decreased, then increased.

Tags

NGSS.HS-PS1-5

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The rate law of any chemical reaction 

must be determined experimentally

can be deduced based on the stoichiometry of the reaction

changes based on the condition of the experiment

I don't know

Tags

NGSS.HS-PS1-5

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A possible rate law for a third overall order of a reaction is __________________

Rate = k [A]2[B]2

Rate = k [A][B]3

Rate = k [A]3 [B]

Rate = k [A]2[B]

Tags

NGSS.HS-PS1-5

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