Practice Law Of Chemical Equilibrium And Equilibrium Constant (6.3)

Practise this section

8 questions

Flashcard drill
2 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
2 questions · about 1 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
What is an equilibrium mixture?
Show hintHide hint
Think about the balance of products and reactants.
Question 2.
Define the equilibrium constant.
Show hintHide hint
What does Kc tell us about a reaction?
3Question 3.
What does the equilibrium constant Kc represent?
- The concentration of reactants
- The concentration of products
- The ratio of products to reactants
Show hintHide hint
Think about what Kc is used for.
4Question 4.
True or False: At chemical equilibrium, the concentrations of reactants and products are always equal.
- True
- False
Show hintHide hint
Consider different reactions' stoichiometries.
Question 5.
In a reaction A + B ⇌ C, the equilibrium concentrations are [A] = 0.2M, [B] = 0.3M, and [C] = 0.4M. Calculate Kc.
Show hintHide hint
Use the given concentrations to compute Kc.
Question 6.
Consider the reaction 2D ⇌ E + F. If Kc = 9, determine the equilibrium concentrations if [E] = 0.5 M and [F] = 0.5 M.
Show hintHide hint
Reorganize the Kc expression to find the unknown concentration.

4 more questions in this section. Enroll free to practise them all.