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Predict which of the following reaction(...

Predict which of the following reaction(s) has a negative entropy change?
`I. CH_(4)(g) +2O_(2)(g)rarrCO_(2)(g)+2H_(2)O(l)`
`II. NH_(3)(g)+HCl(g)rarrNH_(4)Cl(s)`
`III. 2KClO_(4)(s) rarr2KClO_(3)(s)+O_(2)(g)`

A

III

B

II

C

I and II

D

I

Text Solution

Verified by Experts

The correct Answer is:
C
`Deltan_(g)=-ve," "DeltaS=-ve`
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NARENDRA AWASTHI-THERMODYNAMICS-Exercise
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  2. Predict which of the following reaction (s) has a positive entropy cha...

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  3. Predict which of the following reaction(s) has a negative entropy chan...

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  4. Which of the following reactions is asssociated with the most negative...

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  5. When two moles of an ideal gas (C(p.m.)=(5)/(2)R) heated form 300K to ...

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  6. Which of the following expression for entropy change of an irreversibl...

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  7. Which of the following expression is known as Clausius inequality ?

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  8. When two moles of ideal gas (Cv = 3/2R) heated from 300 K to 600 K at ...

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  9. If one mole of an ideal gas (C(p.m.)=(5)/(2)R) is expanded isothermall...

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  10. If one mole of an ideal gas Cp = 5/2 R is expanded isothermally at 300...

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  11. When one mole of an ideal gas is compressed to half of its initial vol...

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  12. What is the change in entropy when 2.5 mole of water is heated from 27...

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  13. Calculate standard entropy change in the reaction Fe(2)O(3)(s)+3H(2)...

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  14. Calculate the entropy change (J//mol K) of the given reaction. The mol...

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  15. Given Delta(r)S^(@)=-266 and the listed [S(m)^(@)value] Calculate S^(...

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  16. The entropy change for a phase transformation is :

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  17. What is the melting point of benzene if DeltaH("fusion")= 9.95kJ//mol ...

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  18. DeltaS for freezing of 10 g of H(2)O(l) (enthalpy of fusion is 80 cal/...

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  19. Chloroform has DeltaH("vaporization")=29.2 kJ//"mol" and boils at 61.2...

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  20. The entropy if vaporisation of benzene is 85JK^(-1) mol^(-1). When 117...

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