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State whether each of the following proc...

State whether each of the following processes is exothermic or endothermic : `H_2O (l) to H_2O (g) , DeltaH = + 40 .7 kJ `.

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To determine whether the process of converting liquid water (H₂O) to gaseous water (H₂O) is exothermic or endothermic, we can follow these steps: ### Step-by-Step Solution: 1. **Identify the Process**: The process given is the conversion of liquid water (H₂O (l)) to gaseous water (H₂O (g)). 2. **Analyze the Given Data**: The change in enthalpy (ΔH) for this process is provided as +40.7 kJ. ...
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Sort out the exothermic and endothermic reactions among the following: (i) C (s) + 2H_2(g) to CH_4(g) , DeltaH = - 17.89 cal (ii) CO(g) + 1/2O_2(g) to CO_2(g) = +284.5 kJ (iii) 2HCl (g) to 2H(g) + 2Cl(g), DeltaH = + 857 kJ (iv) Cl_2(g) + 242kJ to 2Cl(g)

Calculate the equilibrium constant for the following reaction at 298 K: 2H_2O (l) to 2H_2(g) + O_2(g) Given : Delta_fG^@ [ H_2O (l)] = - 273.2 kJ mol^(-1) R = 8.314 J mol^(-1) K^(-1) .

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ICSE-CHEMICAL THERMODYNAMICS -VERY SHORT ANSWER TYPE QUESTIONS
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  2. What is the free energy criterion for a process to occur spontaneously...

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  3. The free energy change DeltaG = 0, when

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  4. An endothermic process involves an increase in the entropy of the syst...

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  5. An exothermic reaction involves a decrease in the entropy of the syste...

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  6. How is standard free energy change related to equilibrium constant ?

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  7. State the third law of thermodynamics.

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  8. What do you understand by the term thermochemistry ?

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  9. Can chemical energy be transferred into electrical energy? If yes, giv...

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  10. Assertion : DeltaH for an exothermic reaction is negative nad for an e...

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  11. Why is it necessary to mention the physical state of substances in a t...

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  12. Define heat of reaction.

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  13. Is calorific value of a food or a fuel is equal to its heat of combust...

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  14. State whether each of the following processes is exothermic or endothe...

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  15. State whether each of the following processes is exothermic or endothe...

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  16. State whether the following processes is exothermic or endothermic : ...

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  17. State whether each of the following processes is exothermic or endothe...

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  18. Name the heat that is involved in the conversion of one allotropic for...

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  19. What would be the complications if Hess's law were not true?

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  20. What would be the bond formation energy of C-H bond if its bond energy...

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