Question

For the process, NH,(g) + HCl(g) - NHCl(s),
the temperature of the surroundings gets lowered.
Which of the following is true for the above pro-
cess?
(1) AH = +ve, AS =-ve
(2) AH =-ve, AS = +ve
(3) AH = +ve, AU =-ve
(4) AH = -ve, AS =-ve​

Answer 1

Answer:

In the reaction we can se gases are converted into solid entropy decreased ie. Delta S negative

And bonds are forming so this is exothermic reaction negative

So correct option is (4)

Hope this helps u