Reaction Rates (OCR A-Level Chemistry A): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
ShowHide
Practise the questions
10 questions from this quiz
What are the standard units for reaction rate?
What are the standard units for reaction rate?
When is the rate of a chemical reaction at its maximum?
When is the rate of a chemical reaction at its maximum?
At the beginning of the reaction
What two conditions must be met for an effective collision?
What two conditions must be met for an effective collision?
Correct orientation and sufficient energy
Why does increasing concentration increase reaction rate?
Why does increasing concentration increase reaction rate?
More particles closer together collide more
How does increasing pressure affect gaseous reactions?
How does increasing pressure affect gaseous reactions?
Equivalent to increasing concentration
What two approaches can monitor reaction progress?
What two approaches can monitor reaction progress?
Reactant disappearance or product appearance
In mass loss experiments, what does the mass decrease represent?
In mass loss experiments, what does the mass decrease represent?
Amount of gas escaping from the vessel
What is produced when decomposes with catalyst?
What is produced when decomposes with catalyst?
and
How do you find the initial rate from a volume-time graph?
How do you find the initial rate from a volume-time graph?
Draw tangent at and find gradient
Why does reaction rate decrease as the reaction progresses?
Why does reaction rate decrease as the reaction progresses?
Reactants are consumed, reducing collisions