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The force responsible for the spontaneit...

The force responsible for the spontaneity of a reaction is called ......

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Free enegry , G = H - TS , is state function that indicates whther a reaction is spontaneous or non-spontaneous. If you think of TS as the part of the system's enegry that is disordered already, then (H -TS) is the part of the system's energy that is still ordered and therefore free to cause spontaneous change by becoming disordered. Also, DeltaG = DeltaH - T DeltaS From the second law of thermodynamics, a reaction is spontaneous if Delta_("total")S is positive, non-spontaneous if Delta_("total")S is negative, and at equilibrium if Delta_('total")S is zero. Since, -T DeltaS = DeltaG and since DeltaG and DeltaS have opposite sings, we can restate the thermodynamic criterion for the spontaneity of a reaction carried out a constant temperature and pressure. IF DeltaG lt 0 , the reaction is spontaneous. If DeltaG gt 0 , the reaction is non-spontaneous. If DeltaG = 0 , the reaction is at equilibrium. Read the above paragraph carefully and answer the following questions based on the above comprehension. For the spontaneity of a reaction, which statement is true?

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Necessary conditions for spontanity of a reaction ________

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ICSE-CHEMICAL THERMODYNAMICS -FILL IN THE BLANKS. TYPE QUESTIONS
  1. Thermodynamics mainly deals with

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  2. A closed system is that which

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  3. A system is said to be in ...... equilibrium when the system and the s...

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  4. When the work is done by the system, w is taken as ......

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  5. Is the entropy of the universe constant ?

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  6. Define isolated system.

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  7. The sum of ...... energy and ...... energy of a system is called entha...

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  8. For the process occurring at constant ....... DeltaH = DeltaU.

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  9. A spontaneous process is also called a ...... process.

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  10. Dissolution of sugar in water is accompanied by ...... of entropy of t...

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  11. A spontaneous process is an ...... process and occurs in ...... direct...

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  12. The force responsible for the spontaneity of a reaction is called .......

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  13. The total entropy change (DeltaS("total")) for the system and surround...

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  14. If DeltaS("total") is positive the process is ..... and occurs in the...

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  15. Whenever a spontaneous process takes place, it is accompanied by an in...

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  16. When DeltaG = 0, the process is …….

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  17. When DeltaH is ngative nad T DeltaS is positive, the process is ……..at...

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  18. The enthalpy change for a reaction does not depend upon the

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  19. The greater the free energy change, the greater is the amount of ........

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  20. At absolute zero, the entropy of a pure crystal is zero. This is

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