Valid Reaction Mechanism

Valid Reaction Mechanism

11th Grade

9 Qs

quiz-placeholder

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Valid Reaction Mechanism

Valid Reaction Mechanism

Assessment

Quiz

Chemistry

11th Grade

Practice Problem

Hard

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

Standards-aligned

Created by

Charles Martinez

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9 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

What is the catalyst in the following rate mechanism?

HBr
H2O
There is no catalyst

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

How many intermediates are in the following rate mechanism?

0
1
2
3

Tags

NGSS.HS-PS1-5

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Which is the rate determining step?

1
2
3

Tags

NGSS.HS-PS1-5

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the elementary steps  has the highest activation energy?

slow
fast

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which step does a catalyst affect?

slow 
fast

Tags

NGSS.HS-PS1-6

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Reaction :


2A + B → C + D


is proposed to have reaction mechanism shown below :


A + B → AB + D (slow)

A + AB → C (fast)


the consistent rate equation with the reaction mechanism above is ____

rate = k [A]2 [B]

rate = k [A]2 [B]2

rate = k [A] [B]

rate = k [A] [B]2

Tags

NGSS.HS-PS1-5

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The decomposition of nitrous oxide :


2N2O(g) → 2N2(g) + O2(g)


is believed to occur by two-step mechanism


N2O(g) → N2(g) + O(g) (slow)

N2O(g) + O(g) → N2(g) + O2(g) (fast)


the consistent rate equation based on the mechanism above is ____

rate = k [N2O]2

rate = k [N2O]

rate = k [N2O]2 [N2]

rate = k

Tags

NGSS.HS-PS1-5

8.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A possible mechanism for reaction :


A + 2B → C + D


is shown below :


2B → E (slow)

A + E → C + D (fast)


which of the following diagram represents reaction pathway diagram for this reaction mechanism?

Media Image
Media Image
Media Image
Media Image

Tags

NGSS.HS-PS1-4

9.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

the reaction between gaseous iodine monochloride, ICl, and gaseous hydrogen :


H2(g) + 2ICl (g) → I2(g) + 2HCl (g)


has a rate equation : k [ICl] [H2]


Which one ARE TRUE based on information above?

unimolecular reaction probably take places in rate-determining step

H2 molecules only involve in fast step reaction

It's likely that only 1 molecules of ICl involve in rate-determining step

The reaction doesn't depends on the concentration of H2

Tags

NGSS.HS-PS1-5