3 pts Yes or No Consider the chemical reaction Cuso 5 HOs

) (3 pts) (Yes or No) Consider the chemical reaction: Cuso, . 5 H,O(s)--> CuSO4(s) + 5 H 20(g) At constant pressure, is work done by the system on the surroundings? Answer (3 pts) (True or False) In computing the change in internal energy ( U) and enthalpy (AH) for a process, he path that a system takes does not affect the values, only the initial and final states. Answer

Solution

Question !: This reaction is an example of physical change. This reaction takes place when the temprature is maintained at 200 degree celcius.

It means we are supplying the heat into the system. Theoretically the enthalpy of this reaction is 11.7 Kj/mol.

So the answer will be clear NO. Here work is done on the system by the surrounding (because we are supplying heat from some external source).

Question 2: No

Internal Energy(U) and Enthalpy (H) are state or point function. But H or U are not state function because enthalpy change and entropy change is defined for two different states(final and initial states).

Yes we can say tha the H and U will be some constant values. because U and H at certain point will have some constant value so their difference will also be constant.

but from the H or U we can\'t tell the original initial states and final states.

So the H or U are not State function but H and U are.