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Kajal Rahim Memon
Asked: 2022-11-06T18:33:00+05:30 In:

Calculate `Delta H ^(@)` for the reaction `CH_(2)= CH_(2) + 3O_(2) rarr 2CO_(2)+ 2H_(2)O`
Given that the average bond energies of the different bonds are `:`
`{:(“Bond”,C-H,O=O,C=O,O-H,C=C),(“Bond energy ” ( kJ mol^(-1)),414,499,724,460,619):}`

Calculate `Delta H ^(@)` for the reaction `CH_(2)= CH_(2) + 3O_(2) rarr 2CO_(2)+ 2H_(2)O`
Given that the average bond energies of the different bonds are `:`
`{:(“Bond”,C-H,O=O,C=O,O-H,C=C),(“Bond energy ” ( kJ mol^(-1)),414,499,724,460,619):}`
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  1. Correct Answer – `-964 Kj mol^(-1)`
    `Deta_(r)H [B.E. (C=C) + 4B.E. (C-H) + 3 B.E.(O-O) ] – [ 2 xx 2 xx B.E. ( C=O) + 2 xx 2 xx B.E.(O-H) ]`
    ` [619+ 4 ( 414)]+ 3 ( 499) ] – [ 4 ( 724)+ 4 ( 460 ) ] kJ = – 964 kJ`

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