Practice Important Considerations For Kc (6.2.1)

Practise this section

10 questions

Flashcard drill
4 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
4 questions · about 3 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
What does Kc signify in a chemical reaction?
Show hintHide hint
Think about what happens when products and reactants are mixed.
Question 2.
Why are solids omitted from Kc expressions?
Show hintHide hint
Consider how solids behave in solutions.
3Question 3.
What impact does temperature have on Kc?
- It remains constant
- It always decreases
- It can increase or decrease
Show hintHide hint
Think about how energy affects reactants and products.
4Question 4.
True or False: Solids are included in the Kc expression.
- True
- False
Show hintHide hint
Reflect on the behavior of solids in equilibrium situations.
Question 5.
For the reaction SO2(g) + O2(g) ⇌ 2SO3(g) with Kc of 1000 at 1000 K, predict how Kc might change if the temperature is increased to 1200 K if it's exothermic.
Show hintHide hint
Think about the heat changes related to Kc.
Question 6.
For the equilibrium 4H2(g) + 2O2(g) ⇌ 4H2O(g), if Kc is found to be 0.01 at 298 K, discuss what this implies regarding the concentration of products compared to reactants.
Show hintHide hint
Visualize the proportions of each species present at equilibrium.

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