1.

Consider the following processes{:(,DeltaH(kJ//mol)),(1//2ArarrB,+150),(3Brarr2C+D,-125),(E+Ararr2D,+350):} For B+DrarrE+2C,DeltaH will be

Answer»

`-325 kJ//mol`
`325 kJ//mol`
`525 kJ//mol`
`-175 kJ//mol`

Solution :`({:(,DeltaH,),((1)/(2)ArarB,+150,...(i)),(3Brarr2C+D,-125,...(ii)),(E+Ararr2D,+350,...(III)),(,,):})/(B+DrarrE+2C"")`
`2xx` eq.(i) + eq. (ii) -eq. (iii)
`DeltaH=300-125-350=-175`


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