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Match appropriately in the space provided. 1.___ΔH is negative a. Will contribute to spontaneity 2.___ΔS is...

Match appropriately in the space provided.

1.___ΔH is negative a. Will contribute to spontaneity

2.___ΔS is positive b.Will not contribute to spontaneity

3.___ΔG is negative c. Will be spontaneous

4.___ΔH is positive & ΔS is negative d. Will not be spontaneous

5.___ΔG =-RTLnK e. Is at equilibrium

f. Will be spontaneous at low temps

g.Will be spontaneous at high temps

Science   Chemistry   
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Answer #1

Solution:

1.___ΔH is negative f. Will be spontaneous at low temps

2.___ΔS is positive g.Will be spontaneous at high temps

3.___ΔG is negative c. Will be spontaneous

4.___ΔH is positive & ΔS is negative d. Will not be spontaneous

5.___ΔG0 =-RTLnK e. Is at equilibrium

a. Will contribute to spontaneity

b.Will not contribute to spontaneity

ΔG = ΔH - TΔS

For spontaneous process, delta G should be negative always.

:When Delta H is negative then -delta H is negative and its large negative value is possible when T is lower because TΔS should be lower than delta H

:When Delta S is positive then -TΔS is negative and its large negative value is possible when T is higher.

:When ΔH is positive & ΔS is negative, then delta G is always positive hence non-spontaneous.

: At equilibrium delta G0 =-RT ln K

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