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Explain the determination of DeltaH of a...

Explain the determination of `DeltaH` of a reaction calorimetrically:

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The change of enthalpy `DeltaH` of a reaction can be measured in a calorimeter as shown in the figure. However the calorimeter is kept open to the atmosphere.

Calorimeter for measuring heat changes at constant pressure (atmosphere pressure)
The calorimeter is immersed in an insulated water bath fitted with stirrer and thermometer. The temperature of the bath is recorded in the beginning and after the end of the reaction and change in temperature is recorded. Knowing the heat capacity of water bath and calorimeter and also the change in temperature, the heat absorbed or evolved in the reaction can be calculated. This gives the enthalpy change `(DeltaH)` of the reaction.
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VGS PUBLICATION-BRILLIANT-THERMODYNAMICS-SHORT ANSWER QUESTIONS
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  2. Explain the determination of DeltaU of a reaction calorimetrically.

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  3. Explain the determination of DeltaH of a reaction calorimetrically:

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  4. What is enthalpy of a reaction? Explain the standard enthalpy of a rea...

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  5. What is the standard enthalpy of formation? Explain it with example.

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  6. Define and explain enthalpy of phase transformation.

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  7. Define the explain the standard enthalpy of fusion (Molar enthalpy of ...

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  8. Define and explain the standard enthalpy of vapourisation (Molar entha...

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  9. Define and explain the standard enthalpy of vapourisation of sublimati...

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  10. Define and explain the standard enthalpy of formation (Delta(r)H^(thet...

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  11. State and explain the Hess's law of constant heat summation.

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  12. Define and explain the enthalpy of combustion (Delta(c)H^(theta)).

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  13. Define and explain the enthalpy of atomisation(Delta(a)H^(theta)).

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  14. Define and explain the bond enthalpy (Delta("bond")H^(theta)).

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  15. What is the bond enthalpy of C-H bond of CH(4)?

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  16. Define heat of solution (Delta("sol")H^(theta)) and heat of dilution.

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  17. Define ionisation enthalpy and electron affinity.

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  18. Explain the spontaneity of a process.

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  19. Is decrease in enthalpy a criterion for spontaneity? Explain.

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  20. What is entropy? Explain with examples.

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