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Grade 11Discuss with colleagues and IITians

heat of formation of ch4 at constant pressure is -18500 cal at 298 k.the heat of formation at constant vol is [ given C +2H2------CH4 ,delta H =18500 cal]

Profile image of liza
7 Years agoGrade 11
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1 Answer

Profile image of Mahima Kanawat
ApprovedApproved Tutor Answer7 Years ago
Dear student 
\Delta H=\Delta E +\Delta ngRT
-18500 = delta(E) +(-2)2*298
Heat at constant volume = - 17308 cal
WITH REGARDS
MAHIMA 
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