OCR A level chemistry equations

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7 Terms

1
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how to calculate reaction ∆H

bond enthalpy of products - bond enthalpy of reactants

2
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Gibbs free energy

∆G = ∆H - T∆S

3
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predicting feasibility based on different parts of equation

4
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Arrhenius plot

lnk = (-Ea/RT) + lnA

5
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equation for rate constant using half life

k = ln2 / t1/2

6
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expression for Kw

Kw (1 × 10-14) = [OH-][H+]

7
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electrode potential of cell

E° cell = E°positive - E°negative