Reaction occur spontaneously -Chemistry Help Please!!-
Favorites|Homepage
Subscriptions | sitemap
HOME > > Reaction occur spontaneously -Chemistry Help Please!!-

Reaction occur spontaneously -Chemistry Help Please!!-

[From: ] [author: ] [Date: 12-05-28] [Hit: ]
1.) When graphite reacts with hydrogen at 25C, Delta(H) is -74.8 kJ/mol and Delta(S) is -0.0809kJ/ (Mol x K)? Prove your answer numerically.......
Please help and tell me how you got the answer... i really do appreciate it !

1.) When graphite reacts with hydrogen at 25'C, Delta(H) is -74.8 kJ/mol and Delta(S) is -0.0809kJ/ (Mol x K)? Prove your answer numerically.

2.) Will a reaction occur spontaneously at -10'C if the Delta(H) is -65.3 kJ/mol and the Delta(S) is -0.48 kJ/ (mol x K)? Prove your answer numerically.

-
2C + H2 --> C2H2, -74.8kJ/mole, ∆S = -0.0809kJ/mole-K
to determine spontaneity, you need to determine ∆G
∆G = ∆H - T∆S
∆G = -74.8kJ/mole - (298K x -0.0809kJ/mole-T)
∆G = -50.69kJ/mole, ∆G < 0, spontaneous

2. do the same thing as above, converting temperature to kelvin
∆G = ∆H - T∆S
1
keywords: Chemistry,occur,Help,spontaneously,Please,Reaction,Reaction occur spontaneously -Chemistry Help Please!!-
New
Hot
© 2008-2010 http://www.science-mathematics.com . Program by zplan cms. Theme by wukong .