Which of the following is a process with a negative δs?

a)caco3(s) → cao(s) + co2(g)

b)co2(s) → co2(g)

c)none of the choices are correct because δs cannot be negative.

d)dissolving sugar in water

e)h2o(l) → h2(s)

The only reaction there that has a negative delta S is H2O(l) going to H2(s). That is because liquids have more entropy than solids therefore the change is negative since you are going from a higher state of entropy to a lower state of entropy. However, I don't know if that reaction is possible. For one, the oxygen disappears and two, liquid hydrogen is really hard to make. I don't think a reaction can produce it.

This is what i found on google “when one phosphate group is removed by breaking a phosphoanhydride bond in a process called hydrolysis, energy is released, and atp is converted to adenosine diphosphate (adp). likewise, energy is also released when a phosphate is removed from adp to form adenosine monophosphate (amp).” i hope this you .