A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 4 years ago
why heat capacity integrals required for accurate enthalpy measurements??????
anonymous
 4 years ago
why heat capacity integrals required for accurate enthalpy measurements??????

This Question is Closed

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0No clue what you're talking about.

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0How are you going to calculate heat from changes in temperature? Surely something like this:\[Q = \int d{\rm T} \thinspace m \thinspace C_p({\rm T})\]

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0i am talking about enthalpy measurement using the relation\[dH=Cp*dT\] and then integrating it over the range of temperature, well acually enthalpy is supposed to be a function of temp. and pressure. at constant pressure if i want to calculate the enthalpy at constant pressure ............. well never mind..!! this was a question in physical chemistry by castellan. i was not able to figure out what might be the answer but now i know the ans.. so u may forget this question.!! the ans is ridiculously simple.. the heat capacity at constant pressure of a substance is not independent of temp. but is a function of temp. so we dont take it as a constant quantity and thus for ACCURATE measurements we use heat capacity integrals.(not from the formula u mentioned carl) but from this formula\[Cp=a+bT+cT^2+dT^3+.......\] i hope its a bit clear now// apologies for writing such a long answer!!

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0did you get the help you needed?
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.