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InterviewSolution
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Calculate the standard enthalpy of reaction for the following reaction using the listed enthalpies of reaction : `3Co(s)+2O_(2)(g)rarrCo_(3)O_(4)(s)` `2 Co(s)+O_(2)(g)rarr2CoO(s)," "DeltaH_(1)^(@)=-475.8 kJ` `6CoO(s)+O_(2)(g)rarr2Co_(3)O_(4)(s),DeltaH_(2)^(@)=-355.0 kJ`A. `-891.2 kJ`B. `-120.8 kJ`C. `+891.2 kJ`D. `-830.8 kJ` |
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Answer» Correct Answer - A `DeltaH^(@)=(3)/(2)xxDeltaH_(1)^(@)+(DeltaH_(2)^(@))/(2)` `=-713.7 - 177.5` `=-891.2 " kJ"` |
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