Kinetics Rate Constant

Determine order of reaction for the reactant A and B based on this rate law:

Rate = K [A]²[B]¹

• [A] first order and [B] first order

• [A] first order and [B] second order

• [A] second order and [B] first order

• [A] second order and [B] second order

Tags

NGSS.HS-PS1-5

What is the unit for rate constant,K if rate law:

Rate = K [A]

• s^-1

• M s^-1

• M^-1 s^-1

• M^-2 s^-1

Tags

NGSS.HS-PS1-5

Given the chemical equation, Haber Prosess

N₂(g) + 3H₂ (g) --> 2NH₃ (g)

Based on this reaction, first order for concentration N₂ and zero order for concentration H₂.

Write rate law:

• Rate = K [N₂]¹ [H₂]¹

• Rate = K [N₂]¹

• Rate = K [H₂]⁰

• Rate = K [N₂]¹ [H₂]³

Tags

NGSS.HS-PS1-5

What happened to the rate of reaction, if concentration of reactant is 'zero order'.

• rate of reaction will become double

• rate of reaction will become triple

• rate of reaction will become quadrapel

• No affect to the rate of reaction

Tags

NGSS.HS-PS1-5

Given rate = k[A][B]² for the reaction of 3A + B -> 2C

What will happen to the rate of reaction if we triple [B]?

• Rate will increase.

• Rate will increase at a factor of 3.

• Rate will increase at a factor of 6.

• Rate will increase at a factor of 9.

Tags

NGSS.HS-PS1-5

Determine the value of rate constant, K based on this table

Rate = K [Q]²

• 1.0 M^-1 s^-1

• 2.0 M^-1 s^-1

• 3.0 M^-1 s^-1

• 4.0 M^-1 s^-1

Tags

NGSS.HS-PS1-5

Which of the rate law refer to the unit of the rate constant, K is M^-2s^-1.

• rate = K [ A ] [ B ]

• rate = K [ A ] [ B ]²

• rate = K [ A ]²

• rate = K [ A ]² [ B ]²

Tags

NGSS.HS-PS1-5

If a reaction has a rate law of :

rate = k [A]⁰[B]¹[C]²

the overall order of reaction is .....

• 0

• 1

• 1.5

• 3

Tags

NGSS.HS-PS1-5

The reaction 2A +B -> C is first order overall

and zero order for B. Which of the statements

is TRUE?

• rate law is rate = k[A[²[B]

• Reaction rate will increase with increase of concentration of B.

• Reaction rate does not depend on the concentrations.

• Reaction rate increases with increase of concentration of A.

Tags

NGSS.HS-PS1-5

The reaction Q->W is a zero order reaction.

When the initial concentration of Q is 0.40M,

the rate is 0.10 Ms^-1.

Determine the rate constant and its unit.

• 0.10 s^-1

• 0.10 Ms^-1

• 0.10 M^-1s^-1

• 0.40 Ms^-1

Tags

NGSS.HS-PS1-5