A reaction occurs spontaneously if:

A reaction occurs spontaneously in forward direction if

A reaction occurs spontaneously in forward direction if

If an endothermic reaction occurs spontaneously at constant T and P , then which of the following is true

If an eddothermic reaction occurs spontaneously at constant temperature and pressure, then which of the following is true?

The enthalpy change for a given reaction at 298 K is -x cal mol^(-1) . If the reaction occurs spontaneously at 298 K , the entropy change at that temperature

The enthalpy change for a given reaction at 298 K is -x cal mol^(-1) . If the reaction occurs spontaneously at 298 K , the entropy change at that temperature

The following reaction occurs spontaneously at 1 atm and 298K. NH_(3)(g)+HC l(g) to NH_(4)Cl(s) . Without doing calculation predict the sign of DeltaH for this process.

Do all exothermic reactions occur spontaneously?