反應(yīng)CaCO3(s)CaO(s)+CO2(g),在高溫時正反應(yīng)自發(fā)進(jìn)行,其逆反應(yīng)在298K時為自發(fā)的,則逆反應(yīng)的ΔrHmΘ與ΔrSmΘ的關(guān)系是()