Equilibrium Questions

Equilibrium Questions

10th Grade

17 Qs

quiz-placeholder

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Equilibrium Questions

Equilibrium Questions

Assessment

Quiz

Chemistry

10th Grade

Hard

Created by

Marissa Wentworth

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17 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Which is the reactant - and why?

A, as concentration decreases
B, as concentration decreases
A, as concentration increases
B, as concentration increases

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When the system X + 2 Y <=> Z has reached equilibrium, which of the following is TRUE?

Forward reaction and Backward reaction stop.
Forward reaction has sped up and backward reaction has slowed down.
Forward and backward reactions occur at the same rate.
Forward reaction has slowed down and backward reaction has sped up.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

At what time the reaction reached equilibrium?

t1
t2
t3
t4

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

For the reaction...
N2  +  O2  <=>  2NO
If  O2 is removed, the  concentration of N2 will _______.

increase
decrease
remain the same
double

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

For the reaction...
N2 (g) +  3 H2 (g) <=> 2 NH3 (g)

If the pressure in the system is increased,  which substance(s) will increase in concentration?

N (as 2 mol gas  → 4 mol gas)
H2 (as 2 mol gas  → 4 mol gas)
N2 and H(as 2 mol gas  → 4 mol gas)
NH3 (as 4 mol gas  → 2 mol gas)

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

For the reaction...
N2  +  O2  <=>  2NO:  Δ H = +182 kJ mol-1.
If the temperature is increased the equilibrium position will shift _______.

to the left
to the right
to the left and right
neither left nor right

7.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What is the Kc expression for this reaction?
   2 NO(g)  +  O2(g) ⇌  2 NO2(g)

K= [NO2]2 / [NO][O2]
K=  [NO][O2] / [NO2]2
K= [NO][O2] [NO2]2
K= [NO2]2 / [NO]2 +  [O2]

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