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The reaction SO(2)(g) +1//2O(2)(g) rar...

The reaction
`SO_(2)(g) +1//2O_(2)(g) rarr SO_(3)(g)` should be

A

Endothermic

B

Exothermic

C

`DeltaH=0`

D

Unpredictable

Text Solution

Verified by Experts

The correct Answer is:
B
The reaction involves decrease in randomness, therefore its spontaneity must be favoured by `-ve` sign of `DeltaH`, i.e., it must be exothermic
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DINESH PUBLICATION-CHEMICAL THERMODYNAMICS AND CHEMICAL ENERGETICS -Exercise
  1. The value of DeltaH for the process given below, NH(4)OH(aq)toNH(4)^(+...

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  2. i. H(2)(g) +CI(2)(g)rarr 2HCI(g),DeltaH =- x kJ ii. NaCI +H(2)SO(4) ...

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  3. The reaction SO(2)(g) +1//2O(2)(g) rarr SO(3)(g) should be

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  4. The enthalpy combustion of a substance

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  5. Xg of ethanal was subjected to combustion in a bomb calorimeter and th...

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  6. The enthalpy change for the process C("(graphite)") rarr C((g)), Delta...

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  7. HA+OH^(-) to H(2)O+A^(-)+q(1) kJ H^(+)+OH^(-) to H(2)O+ q(2) kJ Th...

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  8. The heat change accompanying the reaction 2H(2)(g)+O(2)(g) to 2H(2)O...

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  9. When a solid melts there is

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  10. One gram-atom of graphite and one gram-atom of diamond were separately...

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  11. The reaction which shows heat of formation of water correctly is

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  12. Heat of formation, Delta H(f)^(@) of an explosive compound like NCl(3)...

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  13. The products of combustion of an aliphatic thiol (RSH) at 298 K are

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  14. For the transition C("(diamond)") rarr C("(graphite)"), DeltaH=-1.5 kJ...

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  15. Which of the following statements is correct?

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  16. The heat liberated in the following reaction H^(+)(aq)+OH^(-)(aq) to...

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  17. For the neutralisation of 1 mol of H(2)SO(4) with 2 mols of NaOH in d...

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  18. Enthalpy of neutralisation of all strong acids strong bases has the sa...

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  19. A solution of 200 mL of 1 M KOH is added to 200 mL of 1 M HCl and the ...

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  20. The heats of neutralisation of four acids a, b, c and d when neutralis...

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