Change of enthalpy and change of entropy. Delta H and Delta S questions

+3 votes

 

Delta H negative, Delta S positive

 

 

 

The reaction will be nonspontaneous at low temperature, but spontaneous at high temperature.

 

The reaction will be spontaneous at low temperature, but nonspontaneous at high temperature.

 

The reaction will be nonspontaneous at all temperatures.

 

The reaction will be spontaneous at all temperatures.

 

 

Delta H positive, Delta S  negative

 

 

 

The reaction will be spontaneous at low temperature, but nonspontaneous at high temperature.

 

The reaction will be nonspontaneous at all temperatures.

 

The reaction will be spontaneous at all temperatures.

 

The reaction will be nonspontaneous at low temperature, but spontaneous at high temperature.

 

 

Delta H negative, Delta S negative

 

 

 

The reaction will be spontaneous at low temperature, but nonspontaneous at high temperature.

 

The reaction will be spontaneous at all temperatures.

 

The reaction will be nonspontaneous at all temperatures.

 

The reaction will be nonspontaneous at low temperature, but spontaneous at high temperature.

 

 

Delta H positive, Delta S positive

 

 

 

The reaction will be spontaneous at all temperatures.

 

The reaction will be spontaneous at low temperature, but nonspontaneous at high temperature.

 

The reaction will be nonspontaneous at low temperature, but spontaneous at high temperature.

 

The reaction will be nonspontaneous at all temperatures.

 

asked Mar 18, 2012 in General Chemistry by Joey33 ~Expert~ (1,216 points)
    

1 Answer

+3 votes
 
Best answer

 

Delta H negative, Delta S positive

The reaction will be spontaneous at all temperatures.

 
 

Delta H positive, Delta S  negative

The reaction will be nonspontaneous at all temperatures.

 

Delta H negative, Delta S negative

The reaction will be spontaneous at low temperature, but nonspontaneous at high temperature

 

Delta H positive, Delta S positive

The reaction will be nonspontaneous at low temperature, but spontaneous at high temperature

 

answered Mar 18, 2012 by kirby ~Expert~ (3,020 points)
selected Mar 18, 2012 by Joey33



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