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The enthalpy change for the transition o...

The enthalpy change for the transition of liquid water to steam `Delta_("vap")H` is 40.8 kJ `mol^(-1)` at `100^@C`. Calculate the entropy change `(Delta_("vap")S)` for the process.

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To calculate the entropy change (ΔvapS) for the transition of liquid water to steam, we can use the relationship between enthalpy change (ΔvapH) and entropy change at a constant temperature. The formula is given by: \[ \Delta S = \frac{\Delta H}{T} \] Where: - ΔS is the change in entropy, ...
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ICSE-CHEMICAL THERMODYNAMICS -NCERT TEXT-BOOK. EXERCISES
  1. The enthalpy change for the transition of liquid water to steam Delta(...

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  2. Choose the correct answer. A thermodynamic state function is a quanti...

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  3. For the process to occur under adiabatic conditions, the correct condi...

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  4. The enthalpies of all elements in their standard states are

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  5. DeltaU^@ of combustion of methane is -X kJ mol^(-1). The value of Delt...

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  6. The enthalpy of combustion of methane, graphite and dihydrogen at 298 ...

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  7. A reaction A + B toC + D + q is found to have a positive entropy chang...

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  8. In a process, 701 J of heat is absorbed by a system and 394 J of work ...

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  9. The reaction of cyanamide, NH(2)CN (s), with dioxygen was carried out ...

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  10. Calculate the number of kJ of heat necessary to raise the temperature ...

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  11. The enthalpy change on freezing of 1 mol of water at 5^(@)C to ice at ...

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  12. Enthalpy of combustion of carbon to CO2 is -393.5 kJ mol^(-1) Calcu...

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  13. Enthalpies of formation of CO(g).CO(2)(g) and N(2)O(4) are -110,-393,8...

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  14. Given N(2)(g)+3H(2)(g)rarr2NH(3)(g),Delta(r)H^(Ө)= -92.4 kJ mol^(-1...

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  15. Calculate the standard enthalpy of formation of CH(3)OH(l) from the fo...

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  16. Calculate the enthalpy change for the process C CI(4)(g)rarrC(g)+4C...

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  17. For an isolated system, DeltaU=0, what will be Delta S?

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  18. For the reaction at 298 K, 2A + B to C DeltaH=400 KJ mol^(-1) an...

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  19. For the reaction, 2Cl(g) to Cl2(g), what are the signs of DeltaH and D...

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  20. For the reaction 2A(g)+B(g)rarr2D(g) DeltaU^(theta)=-10.55 KJ and ...

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  21. The equilibrium constant for a reaction is 10. What will be the value ...

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