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give the rate equation for 1st order reactions
rate= K[A]
give the rate equation for zero order reaction
rate=K
give the rate equation for 2nd order reaction
rate=k[A]²
state the units for a reaction with overall order of 0
units= moldm⁻³s⁻¹
state the units for a reaction with overall order of 1
units= s⁻¹
state the units for a reaction with overall order of 2
units= dm³mol⁻¹s⁻¹
what are the 2 methods of monitoring the reactions that produce gas?
• monitoring by gas collection - monitoring by mass loss
draw the graph of a zero order concentration-time graph
page 278
draw the graph of a 1st order concentration-time graph
page 278
draw the graph of a 2nd order concentration- time graph
page 278
what factors affect the rate constant?
• increasing temp shifts the Boltzmann distribution to the right, increasing the proportion of particles that exceed the Ea • as temp increases, particles move faster and collide more frequently • collide with correct orientation
what sort of order is it if the half- life is decreasing
zero order
what sort of order is it if the half-life is constant
1st order
what sort of order is it if the half- life is increasing
2nd order
draw the graph of a zero order rate- concentration graph
page 282
draw the graph of a 1st order rate- concentration graph
page 282
draw the graph of a 2nd order rate- concentration graph
page 282
how can you find lnA from finding the gradient?
where it crosses the y axis
how can you find -Ea/R in the Arrhenius equation?
the gradient of the line