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A2 Chemistry OCR

I Just finished doing my AS exams but now were starting A2 so soon, and I have no idea what we just done in class eurgh... :colondollar:

I don't understand how to calculate Rate Equations and how to draw sketches using equations and the formula: rate=k[A] m n

Question says:
Given below are three reactions and the rate equation for each reaction.
- sketch a graph showing how the concentration of the reactant changes during a reaction
- sketch a graph showing how the rate changes if the concentration of the reactant changes.
- state the units of k.

(a) 2NH3 (g) →3H2 (g) + N2 (g) rate=k

(b) 2N2O5 (g) →4NO2 (g) + O2 (g) rate=k[N2O5(g)]

(c) 2NO2 (g) → 2NO (g) + O2 (g)
rate=k[NO2(g)]2

Help me anyone? Its due in tomorrow :frown:

(edited 9 years ago)

Reply 1

Pigster

What is the order of reaction of each the three equations? (the number the concentration term is raised to?)

The shapes of the graphs will be in your notes/textbook.