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Can enthalpy of combustion be positive?...

Can enthalpy of combustion be positive?

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**Step-by-Step Solution:** 1. **Understanding Enthalpy of Combustion**: - The enthalpy of combustion is defined as the heat released when one mole of a substance is burned in the presence of excess oxygen. 2. **Nature of the Combustion Reaction**: - Combustion reactions typically produce carbon dioxide (CO2) and water (H2O) as products. ...
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MODERN PUBLICATION-THERMODYNAMICS-Conceptual Questions - 2
  1. Will the heat released be same or different in the following two react...

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  2. out of carbon (diamond)and carbon (graphite), whose enthalpy of format...

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  3. What is the basis of Hess's law of heat summation?

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  4. Which of the following state of bromine will have standard heat forma...

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  5. A system is changed from an initial state by a manner so that DeltaH =...

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  6. Given that : O(g) + e^(-) to O^(-)(g) DeltaH = -142 kJ "mol"^(-1) ...

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  7. Can enthalpy of combustion be positive?

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  8. The heat of formation of Fe(2)O(3)(s) is -824.0 kJ.What will be the De...

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  9. The enthalpy of formation of gaseous iodine is 62.5 kJ "mol"^(-1). Wh...

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  10. The standard enthalpy of formation of H(2)O(l) and H(2)O(g) are -285.8...

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  11. Write an expression in the form of a chemical equation of the standard...

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  12. N(2)(g) + 3H(2)(g) to 2NH(3)(g) Delta(r)H^(@) = -92.4 kJ What is the...

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  13. The enthalpy of the reaction H(2)(g)+(1)/(2)O(2)(g)toH(2)O(g) is Del...

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  14. One kilogram of graphite is burnt in a closed vessel.The same amount o...

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  15. If enthalpy of fusion and enthalpy of vaporisation of sodium metal are...

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  16. When is bond dissociation enthalpy equal to bond enthalpy?

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  17. At 1 atm will the Delta(f)H^(@) be zero for CI(2)(g) and Br(2)(g)? Exp...

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