In which of the following is the entropy change positive?

lilblessingjnr

9 years ago

Its lyk this o, once a reactant changes from solid [NH4Cl] to gas,[NH4CL sublimes to gas when heated.] it is totally disordered. Thereby being a positive entropy change, hope u get it

tyjesma

11 years ago

A positive entropy change means an endothermic reaction(to absorb heat)...thermal dissolution of NH4Cl requires heat for its reaction...

tyjesma

11 years ago

For other options B, C & D, they all evolve heat while reacting

elannie

12 years ago

the molecules of ammonium chloride gain more kinetic energy during heatn which causes them to become disordered in their mean positions.

2Toluene

10 months ago

NH4Cl(s) -----> NH3(g) + HCl(g)
hence thermal dissociation of ammonium chloride lead to an increase in entropy with the change positive

Treana

2 months ago

not entropy. it's enthalpy

gabash

11 years ago

nnah eh,doro ops