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Enthalpy and entropy

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Question 5

For the sublimation of solid carbon dioxide (dry ice) at room temperature, what are the signs of $\Delta H\,$ and $ΔS\Delta S$ ?

A

$ΔH\Delta H$ is +ve and $ΔS\Delta S$ is +ve

B

$ΔH\Delta H$ is -ve and $ΔS\Delta S$ is +ve

C

$ΔH\Delta H$ is +ve and $ΔS\Delta S$ is -ve

D

$ΔH\Delta H$ is -ve and $ΔS\Delta S$ is -ve

Markscheme

Enthalpy and entropy Questions

A Level
Chemistry
Enthalpy and entropy

24 exam-style questions on OCR A A Level Chemistry Enthalpy and entropy. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank