December 21, 2024, 12:42:00 PM
Forum Rules: Read This Before Posting


« previous next »
Pages: [1]   Go Down

Topic: Pure Substance  (Read 3399 times)

0 Members and 1 Guest are viewing this topic.

Offline BreakingBad20

  • Regular Member
  • ***
  • Posts: 44
  • Mole Snacks: +1/-1
  • Gender: Male
Pure Substance
« on: May 09, 2012, 05:15:13 AM »
For a pure substance ____________.

A. its Gibbs energy always decreases with the temperature increase at constant pressure.

B. its Gibbs energy always decrease with the the pressure increases at constant temperature.

C. its Gibbs energy always increases when the substance changes from solid to liquid or from liquid to vapour.

D. its Gibbs energy always decreases when the substance changes from vapour to liquid or from liquid to solid.

E its Gibbs energy remains unchanged in a reversible phase change process.
Logged

Offline BreakingBad20

  • Regular Member
  • ***
  • Posts: 44
  • Mole Snacks: +1/-1
  • Gender: Male
Re: Pure Substance
« Reply #1 on: May 09, 2012, 05:19:13 AM »
Is it C?
Logged

Offline sjb

  • Global Moderator
  • Sr. Member
  • ***
  • Posts: 3653
  • Mole Snacks: +222/-42
  • Gender: Male
Re: Pure Substance
« Reply #2 on: May 09, 2012, 05:34:26 AM »
Quote from: BreakingBad20 on May 09, 2012, 05:19:13 AM
Is it C?

Well, if it is C, why can it not be D as well? Is there only one correct answer?
Logged
Pages: [1]   Go Up
« previous next »
Sponsored Links