Rate and Extent of Reaction (Grade 12 NSC Matric Physical Sciences): Flashcards

How quickly reactants convert to products

$\text{Rate} = \frac{\text{change in conc.}}{\text{change in time}}$

Four main experimental methods

Gas syringe system

Fastest reaction rate (high reactant concentration)

Reaction has stopped (reactants used up)

$\text{Rate} = \frac{1}{\text{time}}$ (s$^{-1}$)

Gas escapes from reaction vessel

Faster reaction rate

cm$^3$/s, mol/s, s$^{-1}$