Chemistry A-Level
Colorimetry
What Colorimetry means in Chemistry A-Level, as defined for OCR.
Definition of Colorimetry
Check what you remember
Read the wording for your board, then hide it and explain Colorimetry in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
A technique that exploits the absorption of light by a coloured species, where absorbance is proportional to concentration, so tracking absorbance over time gives a concentration–time curve from which rate can be found.
Topics that use Colorimetry
- How fast? (OCR A-Level)
Related terms
- Calculating rate and concentration from the rate equation
- Concentration–time graphs
- Constant half-life
- continuous monitoring
- Controlled comparison of experiments
- Deducing order from initial-rate data
- Deducing order with respect to a reactant
- Exponential dependence of k on temperature
Using Colorimetry in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
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