Effect of Changes of Conditions on Rate of Reaction (VCE SSCE Chemistry): Flashcards
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Practise the cards
10 cards from this deck
Five factors affecting reaction rate
Five factors affecting reaction rate
Surface area, concentration, pressure, temperature, catalyst
Requirements for successful collision
Requirements for successful collision
Energy and correct orientation
Effect of increased concentration on rate
Effect of increased concentration on rate
More particles per volume → more frequent collisions
Why only surface area matters for solids
Why only surface area matters for solids
Only surface particles can collide with other reactants
Effect of 10°C temp increase on rate
Effect of 10°C temp increase on rate
Rate approximately doubles (100% increase)
Main reason temp increases rate so much
Main reason temp increases rate so much
More particles have energy
Maxwell-Boltzmann distribution
Maxwell-Boltzmann distribution
Shows spread of kinetic energies amongst particles
M-B curve shape at higher temperature
M-B curve shape at higher temperature
Lower and broader peak
M-B curve peak position at higher temp
M-B curve peak position at higher temp
Shifts right (towards higher energies)
Total area under M-B curve with temp change
Total area under M-B curve with temp change
Stays constant (same number of particles)