Hess Law Flashcards

1
Q

What is hess law?

A

Overall enthalpy change of a reaction is the same independent of the route taken

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2
Q

How to work out ΔH1?

A

ΔHr2+ ΔHr3

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3
Q

How to work out ΔH2?

A

ΔH1-ΔH3

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4
Q

How to work out ΔH3?

A

ΔH1-ΔH2

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5
Q

Which way do the arrows go for combustion?

A

Down

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6
Q

Which way do the arrows go for formation?

A

Upwards

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7
Q

What’s the sign if the arrows are the wrong way?

A

+

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