At what temperature is the following reaction feasible: hcl(g) + nh3(g) -> nh4cl(s)?

enthalpy (h) = +946 kj/ mol
entropy (s) = +127 j/ k mol

At a temperature greater than 7449 K, the given reaction is feasible.

Explanation:

For a feasible reaction change in gibbs free energy of a reaction should be negative or .

We know,

Here and

Hence , for a feasible rection,

why do the isotopes of a particular element behave differently in nuclear reactions but the same in chemical reactions? chemical reactions involve changes to electrons in an atom; isotopes do not differ in electrons, and so they react the same way during chemical changes.