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given the following values, determine whether each of the following sets of data rep. spontaneous or non?
given the following values determine whether each of the following sets of date represent spontaneous of non spontaneous processes
Change in H (kJ) Change in S (J/K) Change in T (K)
a. -16 50 300
b. 12 40 300
c. -5 -20 200
d. -5 20 200
e. -5 -20 500
help me out with any work pleasee.
1 Answer
- 1 decade agoFavorite Answer
*NOTE: When i write G, i mean change in G and S as change in S*
Use the equation G=H-TS. if G is negative, then the reaction is spontaneous. G is free energy. a reaction that is spontaneous will try to reduce free energy.
a. G = (-16*1000 j) - (300K)(50 j/K) = -31000j so spont.
b. G = (12*1000 j) - (300K)(40 j/K) = 0 j so at equilibrium
c. G = (-5*1000 j) - (200K)(-20 j/K) = -1000j so spont.
d. G = (-5*1000 j) - (200K)(20 j/K) = -9000j so spont
e. G = (-5*1000 j) - (500K)(-20 j/K) = 5000j so not spont.
