(1)/(2) H_(2(g)) + (1)/(2) Cl_(2(g)) rarr HCl_((g)) , Delta H^(0) = - 92.4 kJ/mole, HCl_((g)) + nH_(2)O rarr H_((aq))^(+) + Cl_((aq))^(-) , Delta H^(0) = -74.8 kJ/mole Delta H^(0)f for Cl_((aq))^(-) is

(1)/(2) H_(2(g)) + (1)/(2) Cl_(2(g)) rarr HCl_((g)) , Delta H^(0) = -

1.	(1)/(2) H_(2(g)) + (1)/(2) Cl_(2(g)) rarr HCl_((g)) , Delta H^(0) = - 92.4 kJ/mole, HCl_((g)) + nH_(2)O rarr H_((aq))^(+) + Cl_((aq))^(-) , Delta H^(0) = -74.8 kJ/mole Delta H^(0)f for Cl_((aq))^(-) is
Answer» `-17.6` kJ/mole `-167.2` kJ/mole `+17.6` kJ/mole `-35.2` kJ/mole Solution :`HCl_((G)) + H_(2)O RARR H_((aq))^(+) + Cl_((aq))^(-)` `Delta H = Delta H_(f_(Cl^(-))) - Delta H_(f_(HCL))` `-74.8 = Delta H_(f_(HCl)) - (-92.4) rArr Delta H_(f_(HCl)) = -167.2`