Home
Class 11
CHEMISTRY
Which of the following is an exothermic ...

Which of the following is an exothermic reaction?

A

`H_(2(g))+Cl_(2(g)) rarr 2HCl_((g)), DeltaH=-184.6 kJ`

B

`N_(2(g))+O_(2(g)) rarr 2NO_((g)), DeltaH=+180.8 kJ`

C

`C_("(graphite)")+H_(2)O_((g)) rarr CO_(2)+H_(2(g))-131.4 kJ`

D

`C_("(graphite)")+2S_((g))+91.9 kJ rarr CS_(2(l))`

Text Solution

Verified by Experts

The correct Answer is:
A
`DeltaH=-ve`, exothermic
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS

    NARAYNA|Exercise Level -III|64 Videos

  • THERMODYNAMICS

    NARAYNA|Exercise Level-IV|27 Videos

  • THERMODYNAMICS

    NARAYNA|Exercise Level -I (C.W)|62 Videos

  • STRUCTURE OF ATOM

    NARAYNA|Exercise EXERCISE - IV EXEMPLAR PROBLEMS|24 Videos

Similar Questions

Explore conceptually related problems

In exothermic reaction

Which one of the following is an exothermic reaction?

Which of the following are exothermic reactions ? I. Burning of coal II . Respiration III Decomposition of vegetable matter into compost . IV Decomposition of silver chloride into silver .

Which of the following is exothermic:

Which of the following is an exothermic compound?

One of the following is an exothermic reaction This is

(a) What do you understned by exothermic and endothermic reactions ? (b) Give one example of an exothermic reaction and one of an endothermic reaction. (c ) Which of the following are endothermic reactions and which are exothermic reactions ? {:((i),"Burning of natural gas",(ii),"Photosynthesis"),((iii),"Electrolysis of water",(iv),"Respiration"),((v),"Decomposition of calcium carbonate",,):}

For an exothermic reaction

NARAYNA-THERMODYNAMICS-Level -II (C.W)
  1. Heat of combustion of benzoic acid (C(6)H(5)COOH) at constant volume a...

    Text Solution

    |

  2. Which of the following is an exothermic reaction?

    Text Solution

    |

  3. Which of the following is an exothermic reaction?

    Text Solution

    |

  4. Determine the heat of transformaiton of C(("dimamond"))rarrC(("graphi...

    Text Solution

    |

  5. H(2)(g)+I(2) (s) rarr 2HI (g), DeltaH=51.9 KJ/mole H(2)(g)+I(2)(g) r...

    Text Solution

    |

  6. The heat of combustion of yellow phoshphorus and red phosphorus are -9...

    Text Solution

    |

  7. The heats of combustion for C, H(2) and CH(4) are -349, -241.8 and -90...

    Text Solution

    |

  8. From the thermochemical reactions, C(graphite)+1//2O(2)rarr CO , Delta...

    Text Solution

    |

  9. The heats of xombustion of carbon, hydrogen and ethane are 94, 68.3 an...

    Text Solution

    |

  10. If the heats of formation of C(2)H(2) and C(6)H(6) are 230 kJ mol^(-1)...

    Text Solution

    |

  11. At 298 K, the heats of formation fo C Cl(4) (g), H(2)O(g), CO(2)(g) an...

    Text Solution

    |

  12. The stadard heats of formation of NO(2)(g) and N(2)O(4) (g) are 33.5 a...

    Text Solution

    |

  13. The enthalpies of formation of CO(2(g)), H(2)O((l)) and C(2)H(4(g)) ar...

    Text Solution

    |

  14. If H(2)S+3/2 O(2) rarr H(2)O+SO(2), DeltaH=-136.7 Kcal H(2)+1/2 O(...

    Text Solution

    |

  15. A+3/2 O(2) rarr AO(3) = 3x KJ AO(2)+1/2 O(2) rarr AO(3) = 2y kJ Th...

    Text Solution

    |

  16. The enthalpy change during the formation of 24.95 grams of hydrated co...

    Text Solution

    |

  17. The molar enthalpies of combustion of C(2)H(2)(g), C("graphite") and H...

    Text Solution

    |

  18. For a given reaction, C(7)H(8(l))+9I(2) (g) rarr 7CO(2)(g) +4H(2)O(l...

    Text Solution

    |

  19. Hess's law states that

    Text Solution

    |

  20. Heat of reaction (DeltaH) is given by

    Text Solution

    |