Chemistry A-Level
Stoichiometric scaling and sign conventions
What Stoichiometric scaling and sign conventions means in Chemistry A-Level, as defined for OCR.
Definition of Stoichiometric scaling and sign conventions
Check what you remember
Read the wording for your board, then hide it and explain Stoichiometric scaling and sign conventions in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
Each enthalpy change of formation is multiplied by its coefficient, and the order is products minus reactants, the reverse of the combustion route.
Topics that use Stoichiometric scaling and sign conventions
- Enthalpy changes (OCR A-Level)
Related terms
- ∆H of combustion
- ∆H of formation
- Activation energy
- Approximate estimate
- Average bond enthalpy
- Averaging over gaseous compounds
- Bond breaking and bond making
- Bond enthalpy
Using Stoichiometric scaling and sign conventions in the exam
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