Which of the following is a physical property of sodium chloride It dissolves in water
It melts
at a high temperature
It is not significantly compressible
It is a solid at room temperature
All of the above are physical properties of sodium chloride

all of the above.

May be correct answer.

a). in this case, dh> 0 and sd> 0. if t becomes larger, the term "-tds" will become more negative. at some point, it is possible that -dts will be more negative than the dh is positive, and the reaction will become spontaneous. this is probably the correct answer, but you should look at all of the other possibilities and make sure of that.