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Calculate the heat of reaction of the following reaction C_(6)H_(12)O_(6(s))+6O_(2(g))to6CO_(2(g))+6H_(2)O_(g)), DeltaH=? |
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Answer» SOLUTION :Multiplying EQUATION 1 and 2 each by 6 REVERSING 3 we get `6C_(("graphite"))+6O_(2(g))to6CO_(2(g)),DeltaH=2370kJ` ……………4 `6H_(2(g))+3O_(2(g))to6H_(2)O_((1)),DetlaH=-1616.4kJ`………… 5 `C_(6)H_(12)O_(6(s))to6C_(("graphite"))+6H_(2(g))+3O_(2(g)),DeltaH=+1169.8kJ`.......6 Adding 4, 5 and 6 `C_(6)H_(12)O_(6(s))+6O_(2(g))to6CO_(2(g))+6H_(2)O_((g))`, `DeltaH_(g)(C_(6)H_(12)O_(6))=-2370.0-1616.4+1169.8=-2816.6kJ` |
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