Initial Rates Method

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

• 1st
• 2nd
• 3rd
• 4th

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

• 1st
• 2nd
• 3rd
• 4th

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

Write the rate law for the reaction aA → bB if the reaction is third order in A. [B] is not part of the rate law.

• Rate =k[A]
• Rate =3[A]
• Rate =k[3A]
• Rate =k[A]³

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

In the following reaction, what is the overall reaction order if doubling [A] results in quadrupling the reaction rate and doubling [B] results in a reaction rate eight times faster? Rate = k[A]^m[B]ⁿ

• 12
• 5
• 6
• 10

Tags

NGSS.HS-PS1-5

• Rate = 11 M^-3/2s^-1 [CO][Cl₂]^3/2

• Rate = 18 M^-3/2s^-1 [CO]²[Cl₂]^1/2

• Rate = 4.4 M^-1/2s^-1 [CO][Cl₂]^1/2

• Rate = 17 M^-2s^-1 [CO][Cl₂]²

Tags

NGSS.HS-PS1-5

• Rate = 57 M^-1s^-1[NO][O₂]

• Rate = 1.7 × 10³ M^-2s^-1[NO]²[O₂]

• Rate = 3.8 M^-1/2s^-1[NO][O₂]^1/2

• Rate = 9.4 × 10³ M^-2s^-1[NO][O₂]²

Tags

NGSS.HS-PS1-5

• Rate = 1.6 × 10^-3 M^1/2s^-1[N₂O₅]^1/2

• Rate = 5.6 × 10^-2 M^-1s^-1[N₂O₅]²

• Rate = 6.0 × 10^-1 M^-2s^-1[N₂O₅]³

• Rate = 5.2 × 10^{- 3} s^-1[N₂O₅]

Tags

NGSS.HS-PS1-5

Determine the rate law.

• Rate=k[NO₂]

• Rate=k[F₂]

• Rate=k[NO₂][F₂]

• Rate=k[NO₂]²[F₂]

Tags

NGSS.HS-PS1-5