Two substances have different heat of fusion values. If given the same number of moles of each substance, and assuming that the same amount of heat is applied to both substances, the substance with a lower heat of fusion value will convert from a solid to a liquid more quickly? True or false?

Question

chmvijay · Answer

true!!!

anonymous · Answer

Hello again :) There is a very tricky question, and I would appreciate your opinion. The wording throws me a bit off. 
"An endothermic reaction could be non-spontaneous if the change in enthalpy is less positive than the product of -TdeltaS is negative." ---True or false?

I cannot make sense of this one. What do you think?

anonymous · Answer

Wouldn't those conditions mean that the reaction would be spontaneous?

anonymous · Answer

are you still there?

chmvijay · Answer

sory iam gettting confused let me try it for some time !!!

chmvijay · Answer

Delta g=delta H-T Delta S
now u have endothermic mean delta H is positive but as u said less positive and -T DeltaS is negative then Delta G will be negative right
then the reaction should be spontaneous

chmvijay · Answer

-T Delta S is negative or only Delta S is negative

chmvijay · Answer

-T Delta S is negative or only Delta S is negative in ur question

anonymous · Answer

The product of -TdeltaS

chmvijay · Answer

then i am right did u understood it

anonymous · Answer

The statement would be false, right?

anonymous · Answer

I am so confused!

chmvijay · Answer

yaaa its false