Chemistry A-Level
Pre-exponential factor and intercept
What Pre-exponential factor and intercept means in Chemistry A-Level, as defined for OCR.
Definition of Pre-exponential factor and intercept
Check what you remember
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Reference: OCR
The intercept on the ln k axis equals ln A, so A is found from A = e^(intercept), and a higher intercept means a larger A.
Topics that use Pre-exponential factor and intercept
- How fast? (OCR A-Level)
Related terms
- Calculating rate and concentration from the rate equation
- Colorimetry
- 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
Using Pre-exponential factor and intercept in the exam
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