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Question
Given that \[\ce{C_{(g)} + O2_{(g)} -> CO2_{(g)}}\] ∆H° = – a kJ; \[\ce{2CO_{(g)} + O2_{(g)} -> 2CO2_{(g)}}\] ∆H° = – b kJ; Calculate the ∆H° for the reaction \[\ce{C_{(g)} + 1/2O2_{(g)} -> CO_{(g)}}\]
Options
`("b" + 2"a")/2`
2 − b
`(2"a" - "b")/2`
`("b" - 2"a")/2`
Solution
`("b" - 2"a")/2`
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