Free Energy (OCR A-Level Chemistry A): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
For a reaction to be thermodynamically feasible, what must be true about ?
For a reaction to be thermodynamically feasible, what must be true about ?
What is the Gibbs equation?
What is the Gibbs equation?
If J K⁻¹ mol⁻¹, what is its value in kJ K⁻¹ mol⁻¹?
If J K⁻¹ mol⁻¹, what is its value in kJ K⁻¹ mol⁻¹?
kJ K⁻¹ mol⁻¹
What is 25°C in Kelvin?
What is 25°C in Kelvin?
298 K
Which combination makes a reaction feasible at all temperatures?
Which combination makes a reaction feasible at all temperatures?
negative, positive
Which combination means a reaction is never feasible?
Which combination means a reaction is never feasible?
positive, negative
As temperature increases, what happens to the term?
As temperature increases, what happens to the term?
It becomes larger and more significant
What is the formula for minimum temperature when ?
What is the formula for minimum temperature when ?
What does a negative value NOT tell us about a reaction?
What does a negative value NOT tell us about a reaction?
The reaction rate or mechanism
What effect does a catalyst have on the value of ?
What effect does a catalyst have on the value of ?
No effect - catalysts don't change