1.

Match the characteristics mentioned in Column II with the process in Column I. {:(,"Column I",,"Column II"),((A),LiF_((s))+AquararrLiF_((aq)),(p),"Exothermic"),((B),KF_((s))+AquararrKF_((aq)),(q),"Endothermic"),((C),O_((g))+e^(-)rarrO_((g))^(-),(r),"Positive affinity"),((D),O_((g))^(-)+e^(-)rarrO_((g))^(2-),(s),"Negative affinity"):}

Answer»


Solution :`(A)DeltaH_("lattice")LiFltDeltaH_("hydration")(LI^(+))+DeltaH_("hydration")(F^(-)),`
Hence, exothermic dissolution.
`(B) DeltaH_("lattice")(KF)gtDeltaH_("hydration")(KF),`
Hence, endothermic dissolution.
`(C) O_((g))+E^(-)rarrO_((g))^(-),DeltaHlt0" (Exothermic)",`
`(D) O_((g))^(-)+e^(-)rarrO_((g))^(2-), DELTAHGT0" (endothermic)",
Hence negative affinity.


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