Posted by alexa on Saturday, April 21, 2007 at 2:58pm.
1. Cl2(g) -> 2Cl(g)
2. H2(g) at 5.0 atm -> H2(g) at 1.0 atm
3. sublimation of solid CO2
4. 2H2(g) + O2(g) -> 2H20(g)
5. PCl5(g) <-> PCl3(g) + Cl2(g)
A. The change in entropy will be positive.
B. The change in entropy will be zero.
C. The change in entropy will be negative.
D. The change in entropy can either be positive or negative.
E. The change in entropy cannot be determined from the information given.
[I'm horribly lost in this chapter...]
i've looked in my book for entropy and i figured out that 3 was A, and 5 was E. I'm still stuck on the others.
Think in terms of order. Solid CO2, for example, has some kind of a crystalline arrangement while the gas does not, so the entropy change should be negative since it will be going from a more ordered arrangement to a less ordered arrangement.
Chemistry -Thermodynamics - P.L., Sunday, April 24, 2011 at 3:51pm
Answer This Question
More Related Questions
- chemistry - For the reaction below, Kp= 28.63 at 800 K. Calculate the ...
- Chemistry - Please help me with this question For the system, PCl5 (g) --> ...
- chemistry - Please help me with this question For the system, PCl5 (g) --> ...
- chemistry - Please help me with this question For the system, (the previous post...
- chem - For the reaction: PCl3(g) + Cl2(g) --> PCl5(g) at 85 degreeC, Kp = 1....
- General Chemistry II - The equillibrium constant (Kp) for the interconversion of...
- Chemistry - PCl5 is introduced into an evacuated chamber and comes to ...
- CHEMISTRY - Equilibrium Equation with Partial Pressures PCl3(g) +Cl2(g) <->...
- chem - A sample of PCl5 weighing 2.69 grams is placed in a 1.000 liter flask and...
- Chemistry - The equilibrium constant, Kp, for the following reaction is 0.497 at...