Tuesday
September 30, 2014

Homework Help: CHEM

Posted by Srah on Friday, March 16, 2012 at 10:41pm.

Calculate ΔSfus and ΔSvap for HF.
Determine the entropy change when 7.60 mol of HF(l) freezes at atmospheric pressure.

I already calculated ΔSfus as 24.103 J/k*mol and ΔSvap as 86.07 J/K*mol....These are correct (I checked them already). I need help with this part of the question:
Determine the entropy change when 7.60 mol of HF(l) freezes at atmospheric pressure.

I got an answer of 183.18 J/K and it marked me wrong and said "The value of ΔSfus above is for 1.00 mol of HF. You need to scale that value up for 7.60 mol of HF. Also, consider the sign of your answer. Does freezing result in an increase or decrease in entropy?"

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

CHEMISTRY - Calculate ΔSfus and ΔSvap for HF. Determine the entropy ...
Chemistry - How do you calculate ΔSfus and ΔSvap for HCl given melting...
Math - Sorry! I don't get this one either.. limit of (f(x+Δx)-f(x)) / Δ...
Chem (Thermodynamics) - The standard molar enthalpy of fusion and the standard ...
Chem - Calculate the work (in kJ) when 1.80 moles of methane react with excess ...
Chemistry - Determine the entropy change when 7.40 mol of HCl(l) boils at ...
chem - The ΔHvap of a certain compound is 34.68 kJ·mol–1 and its Δ...
Chemistry - HClO(aq) + H2O (l) <> H3O+ (aq) + ClO-(aq) Calculate the ...
chemistry - Suppose the ΔGof, ΔHof, and ΔSo are available and ...
Chemistry - The standard internal energy change for a reaction can be symbolized...

Search
Members