Flashcards
Reaction Rates
Cards in this deck (12)
- 1Rate =Δ%/t = ?moldm-3
- 2Zero orderConc. of that reactant has NO effect on the rate
- 3First orderAny change in conc. is mirrored in change of rate
e.g.
[A]^1 X 2
=
rate X 2^1 - 4Second orderAny Δ in conc. causes the rate to increase by Δ^2
e.g.
[A]^2 X 4
=
Rate X 4^2 - 5Rate equationRate=k[A]m[B]n
- 6Overall orderoverall effect of the [R]% on the rate
sum of the powers - 7Rate constant KRearrange equation to make K the subject
- 8K from overall order =1Rate=k[A]1
K=rate/[A]1
moldm-3s-1/moldm-3
K=moldm-3 - 9Methods to produce conc.-time graphsContinuous monitoring via gas collection/mass loss/colorimetry
- 10Analysis by Colorimetry (8)1. Prepare STD sol. of known % of coloured chemical.
2. Select a filter w/ comp. colour to coloured chem.
3. Zero the colorimeter with water
4. Measure the absorbance readings of the STD sol.
5. Plot a calibration curve of absorbance against %.
6. Carry out reaction, take absorbance readings at measured intervals.
7. Use the calibration curve to measure the conc. of coloured chem at each absorbance reading.
8. Plot a conc.-t graph to determine r.o.r - 11Purpose of calibration curveGet concentration of reactant from absorbance reading
- 12—
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- Description
- User has deleted their subject information Flashcards on Reaction Rates, created by Deleted user on 01/05/2018.
- Created by
- Deleted user · May 2018
- Updated
- May 1, 2018
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- Created by I Shouldn't be awake · May 1, 2018
- Copied by I Shouldn't be awake · May 1, 2018
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