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Two atoms of hydrogen combine to form a ...

Two atoms of hydrogen combine to form a molecule of hydrogen gas the energy of the `H_(2)` molecule is

A

Greater than that of separate atoms

B

Equal to that of separate atoms

C

Lower than that of separate atoms

D

Some times lower and some times higher

Text Solution

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The correct Answer is:
C
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ALLEN-THERMODYNAMICS -EXERCISE -3
  1. Given that standatrd heat enthalpy CH(4), C(2)H(4) and C(3)H(8) are -1...

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  2. The standard molar heat of formation of ethane, CO(2) and water are re...

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  3. Two atoms of hydrogen combine to form a molecule of hydrogen gas the e...

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  4. The Delta(f)H^(Theta) for CO(2)(g), CO(g), and H(2)O(g) are -393.5, -1...

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  5. The heats of combustion of carbon and carbon monoxide are -393.5 and ...

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  6. The standard heat of formation of CS(2)(I) will be, given that the sta...

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  7. The heat of combustion of CH(4(g)), C((g)) and H(2(g)) at 25^(@)C are ...

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  8. Standard enthalpy of formation is zero for

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  9. The standard heat for formation of NO(2) and N(2)O(4) are 8.0 and 2.0...

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  10. M is a metal that forms an oxide M(2)O,(1)/(2)M(2)O rarr M+(1)/(4)O(2)...

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  11. According to equation, C(6)H(6)(l)+15//2 O(2)(g)rarr 6CO(2)(g)+3H(2)O(...

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  12. Heat of combustion of CH(4), C(2)H(6), C(2)H(4) and C(2)H(2) gases are...

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  13. The standard enthalpy of formation of CO is -110 kJ and of CO2 is -394...

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  14. If enthalpies of formation of C(2)H(4)(g),CO(2)(g) and H(2)O(l) at 25^...

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  15. The heat of combustion of carbon and monoxide are -394 and -285 KJ mol...

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  16. When a certain amount of ethylene was combusted, 6226 kJ heat was evol...

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  17. Find out the heat evolved in combustion if 112 litre (at 1 atm, 273 K)...

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  18. A person requires 2870 kcal of energy to lead normal daily life. If he...

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  19. On complete combustion of 2 gm methane 26575 cals of heat is generated...

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  20. X gm of ethanal was subjected to combustion in a bomb calorimeter and ...

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