Equations/Formulae Flashcards by Sam Snowden

Q

What is the Equations for Gibbs Free Energy?

A

ΔG = ΔH - TΔS

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Q

At equilibrium, what does ΔG = ?

A

0

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Q

How do you work out the entropy of a reaction?

A

ΔS = ΣSproducts - ΣSreactants

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Q

When aA + bB ⇔ cC + dD

Give an expresion for Kc

A

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Q

When aA + bB ⇔ cC + dD

Give an expresion for Kp

A

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Q

How do you work out the EMF?

A

E⁰Oxidant - E⁰ Reductant

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Q

High E⁰ value implies what?

A

Good Oxidisng Agent

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Q

Low E⁰ value implies what?

A

Good Reducing Agent

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Q

What is the formula for Kw? Give the answer

A

=1x10^-14

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Q

Give the formula for Ka

A

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Q

What is the formula for pH?

A

-log₁₀[H+]

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Q

On an acid/base titration curve, where is pKa?

A

1/2 Neutralisation

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Q

How do you work out the pH of a buffer?

A

pH_Buffer = pKa - log₁₀[HA/A-]

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