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Course: EST 2 Chemistry
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EST 2 Chemistry

Structure of Matter

0/11

States of Matter

0/7

Reaction Types

0/9

Stoichiometry

0/7

Equilibrium and Reaction Rates

0/7

Thermochemistry

0/5

Descriptive Chemistry

0/7

Laboratory Skills

0/5
Quiz

Chemical equilibrium – Check yourself

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Chemical equilibrium EST Chemistry check yourself quiz: free practice for EST 2 Chemistry. Work through this Chemical equilibrium EST Chemistry check yourself quiz and get instant feedback on every answer. If you get stuck, review the 5.1 Chemical equilibrium lesson. More practice: EST 2 Chemistry — all units. Syllabus: OpenStax free science textbooks.

  • Questions count: 10
  • Passing grade: B+
  • Time limit: 10 minutes
Start Quiz
1.
Adding a catalyst to a system at equilibrium
shifts right
shifts left
does not shift it
changes K
2.
For 2SO2 + O2 ⇌ 2SO3, increasing pressure shifts
left
right
nowhere
depends on catalyst
3.
If Q > K, the reaction
proceeds forward
proceeds in reverse
is at equilibrium
stops
4.
Which is NOT in the K expression for CaCO3(s) ⇌ CaO(s) + CO2(g)?
CO2
CaCO3 and CaO
only CaO
none
5.
Which statement best describes Reversible reaction?
Ratio of product to reactant concentrations, each raised to its coefficient.
All species are in the same phase.
A reaction that can proceed in both directions.
Same expression as K but using current concentrations.
6.
Which statement best describes Dynamic equilibrium?
All species are in the same phase.
A system at equilibrium shifts to relieve an applied stress.
Forward and reverse rates are equal; concentrations stay constant.
Species are in more than one phase; pure solids and liquids are omitted from K.
7.
Which statement best describes Equilibrium constant (Keq)?
A system at equilibrium shifts to relieve an applied stress.
Same expression as K but using current concentrations.
Ratio of product to reactant concentrations, each raised to its coefficient.
Species are in more than one phase; pure solids and liquids are omitted from K.
8.
Which statement best describes Homogeneous equilibrium?
All species are in the same phase.
Ratio of product to reactant concentrations, each raised to its coefficient.
Forward and reverse rates are equal; concentrations stay constant.
A system at equilibrium shifts to relieve an applied stress.
9.
Which statement best describes Heterogeneous equilibrium?
Species are in more than one phase; pure solids and liquids are omitted from K.
Forward and reverse rates are equal; concentrations stay constant.
Same expression as K but using current concentrations.
A system at equilibrium shifts to relieve an applied stress.
10.
Which statement best describes Reaction quotient (Q)?
Ratio of product to reactant concentrations, each raised to its coefficient.
Same expression as K but using current concentrations.
All species are in the same phase.
Species are in more than one phase; pure solids and liquids are omitted from K.
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Part of Equilibrium and Reaction Rates — see every lesson and quiz in this unit.
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