Home
Class 11
CHEMISTRY
An exothermic reaction is one in which t...

An exothermic reaction is one in which the reacting substances :

A

Have more energy than the products

B

Have less energy than the products

C

Are at a higher temperature than the product

D

None of the above

Text Solution

Verified by Experts

The correct Answer is:
A

For exothermic reactions `H_(p) lt H_(R)`
For endothermic reactions `H_(P) gt H_(R)`
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS AND THERMOCHEMISTRY

    ERRORLESS|Exercise NCERT Based Questions (Bond Energy)|15 Videos
  • THERMODYNAMICS AND THERMOCHEMISTRY

    ERRORLESS|Exercise NCERT Based Questions (Free Energy and Work Function) |37 Videos
  • THERMODYNAMICS AND THERMOCHEMISTRY

    ERRORLESS|Exercise NCERT Based Questions (IInd & IIIrd Law of Thermodynamics and Entropy)|41 Videos
  • THE S-BLOCK ELEMENTS

    ERRORLESS|Exercise Assertion & Reason|10 Videos

Similar Questions

Explore conceptually related problems

In exothermic reaction

An exothermic reaction is one which

For an exothermic reaction

An exothermic reaction is represented by the greph :

ERRORLESS-THERMODYNAMICS AND THERMOCHEMISTRY-NCERT Based Questions (Heat of Reaction)
  1. Which of the following neutralisation reactions,the heat of neutralisa...

    Text Solution

    |

  2. If S+O(2)toSO(2),DeltaH=-298.2 " kJ" " mole"^(-1) SO(2)+(1)/(2)O(2)t...

    Text Solution

    |

  3. An exothermic reaction is one in which the reacting substances :

    Text Solution

    |

  4. The standard ethelpy of combustion at 25^(@)C of hydrogen, cyclohexene...

    Text Solution

    |

  5. Enthalpy of neutralisation of NH(4)OH and HCl is numerically

    Text Solution

    |

  6. The energy released on combustion of 1 mole of C((s)) with gaseous oxy...

    Text Solution

    |

  7. In the reaction for the transition of carbon in the diamond form to ca...

    Text Solution

    |

  8. The difference between the heats of reaction at constant pressure and ...

    Text Solution

    |

  9. Based on the following thermochemical equations H(2)O(g) + C(s) rarr...

    Text Solution

    |

  10. For an exothermic reaction

    Text Solution

    |

  11. The standard enthalpy of formation of H(2)O((l)) and Fe(2)O(3(s)) are ...

    Text Solution

    |

  12. Calculate the standard heat of formation of carbon disulphide (l). Giv...

    Text Solution

    |

  13. When 5 g of sulphur is burnt to SO(2), 46 kJ of heat is liberated. Wha...

    Text Solution

    |

  14. The standard heats of formation of CH(4), H(2)O and CH(3)OH are -76, ...

    Text Solution

    |

  15. The enthalpy of formation of methane C(( S))+2H(2(g)) rarr CH4(g) at ...

    Text Solution

    |

  16. When 400 ml of 2.0 N solution of a weak acid is neutralized by a dilut...

    Text Solution

    |

  17. The values of heat of combustion of ethane (C(2)H(6)) and ethyne (C(2)...

    Text Solution

    |

  18. In which of the following reactions, the heat liberated is known as ''...

    Text Solution

    |

  19. What would be the heat released when an aqueous solution containing 0....

    Text Solution

    |

  20. A cylinder of gas is assumed to contain 11.6 kg of butane (C4H10). If ...

    Text Solution

    |