1.1 Reaction Rate

Which of the following is a unit of rate of reaction?

• s^-1

• Ms^-1

• M

• M^-1s^-1

For the reaction below, which of the following is the correct differential rate equation?

2NH₃(g) + 5/2O₂(g) → 2NO(g) + 3H₂O(g)

For the reaction:

4NH₃(g) + 5O₂(g) → 4 NO(g) + 6H₂O(g)

the rate of disappearance of oxygen is 0.020 M/s. What is the rate of formation of H₂O?

• 0.03 Ms^-1

• 0.02 Ms^-1

• 0.017 Ms^-1

• 0.024 Ms^-1

Tags

NGSS.HS-PS1-7

Given the following balanced equation :

2NO(g) + Cl₂(g) → 2NOCl(g)

If the rate of disappearance of Cl₂ is 4.84 x 10^-2 Ms^-1, what is the rate of disappearance of NO?

• 1.45 x 10^-2 Ms^-1

• 2.42 x 10^-2 Ms^-1

• 3.67 x 10^-2 Ms^-1

• 9.68 x 10^-2 Ms^-1

Tags

NGSS.HS-PS1-7

A reaction has the rate law: Rate = k [A][B].
What is the overall order of reaction?

• 1st
• 2nd
• 3rd
• 4th

Tags

NGSS.HS-PS1-5

The rate law for the reaction 2NO_(g) + O_2(g) → 2NO_2(g) is first order in O₂ and third order overall. What is the rate law for the reaction?

• Rate = k [NO]²[O₂]²
• Rate = k [NO]¹[O₂]²
• Rate = k [NO]²[O₂]¹
• Rate = k [2NO]²[O₂]¹

Tags

NGSS.HS-PS1-5

What is k?

• reaction rate

• equilibrium constant

• rate constant

• another reactant

Tags

NGSS.HS-PS1-5

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

Which one of the following is a first order, overall reaction

• k₁= 1.000 M s^-1
• k₁= 5403.2 M^½ s^½
• k₁= 1.23 x 10^-6 M^-1 s^-1
• k₁= 10.7 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