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HELP alevel chemistry thermodynamics question :)

Hi!!!! I need help on this question :smile:

NH3(g) + HCl(g) NH4Cl(s)

ΔH reaction = −141.5 kJ mol−1

Use the table to calculate ΔS for this reaction. What is the entropy change

Substance---State at standard conditions---Entropy, S/ J K-1 mol-1
NH3 Gas 192
HCl Gas 187
NH4Cl Solid 95
Original post by umeyaai
Hi!!!! I need help on this question :smile:

NH3(g) + HCl(g) NH4Cl(s)

ΔH reaction = −141.5 kJ mol−1

Use the table to calculate ΔS for this reaction. What is the entropy change

Substance---State at standard conditions---Entropy, S/ J K-1 mol-1
NH3 Gas 192
HCl Gas 187
NH4Cl Solid 95

Why do you need help?
You are given the absolute entropy before the reaction and after reaction, you simply have to work out the difference!

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