Correct option is (C) 43.04 KJ
\(\overset{+1}{Ag}Cl\) + \(\frac12\)H2(g) \(\longrightarrow\) \(\overset{o}{Ag}(s)\) + H+ + Cl-
\(\Delta \overset{o}G\) = -21.52 KJ
As we know, \(\Delta \overset{o}G\) is extensive property. It depends on the number of electrons transfer
\(\Delta \overset{o}G\) = -nFEo
(Eo = intensive property) (F = Constant 96500 c)
therefore,
for
2Ag Cl(s) + H2(g)\(\longrightarrow\) 2Ag(s) + 2H+ + 2Cl-
in this reaction, 2 moles of electrons are transfer
\(\therefore\) \(\Delta \overset{o}G\) = 2 x -21.52 KJ
= -43.04 KJ