What is the δg under standard temperature for the following reaction between?
nh3(s) → nh3(l)
given:
nh3(s) : δhf = –46.11 j/mol; δsf = 192.45 j/mol·k
nh3(l) : δhf = –80.29 j/mol; δsf = 111.3 j/mol·k
a.
–5 kj/mol
b.
5 kj/mol
c.
–10 kj/mol
d.
10 kj/mol

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.

c) should be the answer.