Home
Class 11
CHEMISTRY
State Hess's law. Give two applications ...

State Hess's law. Give two applications of it.

A

the standard enthalpy of an overall reaction is the sum of the enthalpy changes in individual reactions.

B

enthalpy of formation of a comound is same as the enthalpy of decomposition of the compound into constituent elements, but with opposite sign.

C

at constant temperature the pressure of a gas is inversely proportional to its volume

D

the mass of a gas dissolved per litre of a solvent is proportional to the pressure of the gas in equilibrium with the solution

Text Solution

Verified by Experts

The correct Answer is:
A
According to Hess's law the standard enthalpy of overall reaction is sum of the enthalpy change in individual reaction.
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS

    NARENDRA AWASTHI|Exercise Level 3 - One Or More Answers Are Correct|1 Videos

  • THERMODYNAMICS

    NARENDRA AWASTHI|Exercise Level 3 - Match The Column|2 Videos

  • THERMODYNAMICS

    NARENDRA AWASTHI|Exercise Level 2 (Q.1 To Q.30)|1 Videos

  • STOICHIOMETRY

    NARENDRA AWASTHI|Exercise Level 3 - Subjective Problems|20 Videos

Similar Questions

Explore conceptually related problems

Give two applications of dipole moment.

State two application of beats.

State Charles’ law.

State Henry's law. Give one of its limtation.

How eddy currents are produced? give two applications of eddy currents.

Give important applications of Hess's law.

NARENDRA AWASTHI-THERMODYNAMICS-Exercise
  1. When reaction is at standard state at equilibrium, then

    Text Solution

    |

  2. For the auto-ionization of water at 25^(@)C, H(2)O(l)iff H^(+)(aq)+OH^...

    Text Solution

    |

  3. State Hess's law. Give two applications of it.

    Text Solution

    |

  4. An imaginary reaction X rarr Y takes place in three steps X rarr A...

    Text Solution

    |

  5. The enthalpy change for a reaction does not depend upon:

    Text Solution

    |

  6. The standard enthalpy of formation of gaseous H(2)O at 298 K is -241.8...

    Text Solution

    |

  7. Which of the following value of DeltaH(f)^(@) represent that the produ...

    Text Solution

    |

  8. For which of the following substances is the heat of formation in the ...

    Text Solution

    |

  9. Calculate the standard enthalpy of reaction for the following reaction...

    Text Solution

    |

  10. Given the following equations and DeltaH^(@) values, determine the ent...

    Text Solution

    |

  11. Given : C("diamond")+O(2)rarrCO(2),DeltaH=-395 kJ C("graphite"...

    Text Solution

    |

  12. Which of the following equations represents a reaction that provides t...

    Text Solution

    |

  13. Use the given standard enthalpies of formation (in kJ/mol) to determin...

    Text Solution

    |

  14. The standard enthalpy of formation of octane (C(8)H(18)) is -250kJ //m...

    Text Solution

    |

  15. Determine the enthalpy of formation of B(2)H(6)(g) in kJ/mol of the fo...

    Text Solution

    |

  16. Consider the following reactions: C(s)+O(2)(g)toCO(2)(g)+x " kJ" C...

    Text Solution

    |

  17. If Delta(f)H^(@)(C(2)H(4)) and Delta(f)H^(@)(C(2)H(6)) are x(1) and x(...

    Text Solution

    |

  18. Calculate the heat of formation of n butane from the following data: ...

    Text Solution

    |

  19. The enthalpy of the reaction forming PbO according to the following eq...

    Text Solution

    |

  20. The fat, C(57)H(104)O(6)(s), is metabolized via the following reaction...

    Text Solution

    |