1.

Calculate the enthalpy change for the given reaction from data provided (kJ/mole) {:(HA(g),+,B(g),rarr,AHB(s)),("(weak acid)",,"(weak acid)",,"(Salt)"):} DeltaH_("neutralization") {HA(aq) ["at infinite dilution"]//B(aq)["at infinite dilution"]}=-40" kJ/mole" {:(DeltaH_("solution")[HA(g)],=-10" kJ/mole",{"at infinite dilution"}),(DeltaH_("solution")[B(g)],=-5" kJ/mole",{"at infinite dilution"}),(DeltaH_("solution")[HAB(s)],=+8" kJ/mole",{"at infinite dilution"}):}

Answer»

`-36`
`-63`
`-45`
`-37`

Solution :`{:(""HA(g),+,""B(g),overset(DeltaH)(RARR),""AHB(s)),(+nH_(2)O darrDeltaH_(1),,+nH_(2)O darr DeltaH_(2),,+nH_(2)O darr DeltaH_(4)),(""HA(aq),+,""B(aq),overset(DeltaH_(3))(rarr)," "A^(-) (aq)+B^(+)(aq)):}`
`DeltaH=DeltaH_(1)+DeltaH_(2)+DeltaH_(3)-DeltaH_(4)`
`=-10-5-8-40=-63" kJ/mole"`


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