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The combustion reaction occuring in an a...

The combustion reaction occuring in an automobile is `2C_(8)H_(18)+25O_(2)(g) to16CO_(2)(g)+18H_(2)O(g)` This reaction is accompanied with:

A

`+,-,+`

B

`-,+,-`

C

`-,+,+`

D

`+,+,-`

Text Solution

Verified by Experts

The correct Answer is:
B
For combustion, `Delta H= -ve," as "n_(p) gt n_(r) Delta S =+ve.`
For spontaneity `Delta G =-ve.`
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MARVEL PUBLICATION-CHEMICAL THERMODYNAMICS AND ENERGETICS-MULTIPLE CHOICE QUESTIONS (HIGHER LEVEL)
  1. In a reversible process, Delta S(sys) + Delta S(surr) is

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  2. Which of the following relation is correct ?

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  3. The combustion reaction occuring in an automobile is 2C(8)H(18)+25O(2)...

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  4. In a closed insulated container a liquid is stirred with a paddle to i...

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  5. A system is taken from state A to state B along two different paths 1 ...

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  6. In which of the following cases does entropy decreases?

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  7. For a reaction Ag(2)O((s)) hArr 2Ag((s))+(1)/(2)O(2(g)) the entrop...

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  8. Value of Delta H-and Delta S for five different reaction are given bel...

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  9. Relation between C(p) and C(y) (in calories) is

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  10. Out of boiling point (I), entropy (II), pH (III) and e.m.f of a cell (...

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  11. Which one of the following statement is false?

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  12. A mixture of two moles of carbon monoxide and one mole of oxygen, in a...

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  13. If W(1) W(2), W(3) and W(4) are work done in isothermal, adiabatic, is...

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  14. Which of the following fuels will have the highest calorific value (kJ...

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  15. For a reaction to occur spontaneously

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  16. Which of the following does not exhibit zero entropy at absolute zero ...

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  17. When does the reaction occur spontaneously on the basis of the relatio...

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  18. For which of the following processes will energy be absorbed?

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  19. Calculate the heat of formation of benzene from the following data, as...

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  20. C(2)H(6)(g)+3.5O(2)(g)to2CO(2)(g)+3H(2)O(g) DeltaS("vap")(H(2)O,l)=x...

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