Equilibrium Constant Kc High School Chemistry

Quiz
•
Science
•
10th Grade
•
Hard
Standards-aligned
Charles Martinez
FREE Resource
40 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Nitrogen and oxygen do not react appreciably at room temperature, as illustrated by our atmosphere. But at high temperatures, the reaction below can proceed to a measurable extent.
N2(g) + O2(g) ⇌ 2NO(g)
At 3000 K, the reaction above has Kc = 0.0153. If 0.3000 mol of pure NO is injected into an evacuated 2.000 L container and heated to 3000 K, what will be the equilibrium concentration of NO?
0.0096 mol dm-3
0.0706 mol dm-3
Tags
NGSS.HS-PS1-5
NGSS.HS-PS1-7
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
At a particular temperature, Kc = 2.0 x 10¯6 for the reaction:
2CO2(g) ⇌ 2CO(g) + O2(g)
If 2.0 mol CO2 is initially placed into a 5.0 L vessel, calculate x?
x = 4.3 x 10¯3 M
x = 4.3 x 10-2 M
Tags
NGSS.HS-PS1-5
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What are the two factors to look for when determining if the reaction is at equilibrium?
Forward reaction rate is faster than the reverse and concentrations are equal
Forward and reverse reaction rates are equal and concentration is constant
Forward and revers reaction rates are equal and concentration is equal
Forward reaction rate is faster than the reverse and concentration is equal
Tags
NGSS.HS-PS1-6
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
For the reaction... SO2 + O2 <−> SO3 If the concentration of SO2 is increased, the equilibrium of the reaction will shift ___________.
left
right
left and right
neither left nor right
Tags
NGSS.HS-PS1-5
NGSS.HS-PS1-6
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
For the reaction... SO2 + O2 <−> SO3 If the equilibrium shifts to the right, the concentration of O2 will ___________.
increase
decrease
remain the same
double
Tags
NGSS.HS-PS1-5
NGSS.HS-PS1-6
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Nitrogen and oxygen do not react appreciably at room temperature, as illustrated by our atmosphere. But at high temperatures, the reaction below can proceed to a measurable extent.
N2(g) + O2(g) ⇌ 2NO(g)
At 3000 K, the reaction above has Kc = 0.0153. If 0.3000 mol of pure NO is injected into an evacuated 2.000 L container and heated to 3000 K, what will be the equilibrium concentration of NO?
0.0096 mol dm-3
0.0706 mol dm-3
Tags
NGSS.HS-PS1-5
NGSS.HS-PS1-7
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Nitrogen and oxygen do not react appreciably at room temperature, as illustrated by our atmosphere. But at high temperatures, the reaction below can proceed to a measurable extent.
N2(g) + O2(g) ⇌ 2NO(g)
At 3000 K, the reaction above has Kc = 0.0153. If 0.3000 mol of pure NO is injected into an evacuated 2.000 L container and heated to 3000 K, what will be the equilibrium concentration of NO?
0.0096 mol dm-3
0.0706 mol dm-3
Tags
NGSS.HS-PS1-7
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