Home
Class 11
CHEMISTRY
7.5 Kj of heat is added to a closed syst...

7.5 Kj of heat is added to a closed system and its internal system decreases by 12kJ, then how much energy is transferred as work?

A

`19.5kJ`

B

`-19.5kJ`

C

`4.5kJ`

D

`-4.5kJ`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • SALT ANALYSIS

    GRB PUBLICATION|Exercise Subjective Type|69 Videos

Similar Questions

Explore conceptually related problems

If 150 J of heat is added to a system and the work done by the system is 110 j. then change in internal energy wil be

110 J of heat is added to a gaseous system, whose internal energy change is 40J. Then the amount of external work done is

110 J of heat is added to a gaseous system, whose internal energy change is 40 j. then the amount of external work done is

The heat of 100 J is added to a gaseous system whose internal energy is 40 J, then the amount of external work done will be

"When heat is added to a system, the internal energy of the system must increase". Justify this statement.

If "10" calorie of heat energy is added to a system and the system does "5" calorie of work on the surroundings,What is the energy change of the system?

If 500 calorie of heat energy are added to a system and the system does 350 calorie of work on the surroundings, what is the energy change of the system?

If the amount of heat given to a system is 40 J and the amount of work done on the system is 15 J then the change in internal energy is

If the amount of heat given to a system is 50 J and work done on the system is 15 J, then change in internal energy of the system will be

GRB PUBLICATION-THERMODYNAMICS-All Questions
  1. A real gas is subjective to an adiabatic process form (2"bar",40L,300K...

    Text Solution

    |

  2. Calculate magnitude of work involved when 100g of calcite form of CaCO...

    Text Solution

    |

  3. 7.5 Kj of heat is added to a closed system and its internal system dec...

    Text Solution

    |

  4. 10 litre of an ideal gas at 25 atm and 27^(@)C is expanded isothermall...

    Text Solution

    |

  5. Ration of C(p)//C(v) "for" NH(3) gas(assuming ideal behaviour) when vi...

    Text Solution

    |

  6. Temperature of 1.5 mole of gas is increased by 10^(@)C at constant pre...

    Text Solution

    |

  7. Which of the following expression expressions is true for an ideal gas...

    Text Solution

    |

  8. For the real gas reaction, 2A(g)+B(g)to2C(g) deltaH=-440kJ//mol If...

    Text Solution

    |

  9. Which of the following is true

    Text Solution

    |

  10. 1dm^(3) of an ideal gas at a pressure of 10bar expands reversibly and ...

    Text Solution

    |

  11. With what pressure must a given volume of oxygen, originally at 300K a...

    Text Solution

    |

  12. Pressure of a liquid is linear function of volume P=a+bV. Calculate wo...

    Text Solution

    |

  13. For reaction 2A(g)+3B(g)to4C(g)+D(s) Calulate work involved during s...

    Text Solution

    |

  14. An ideal gas was subjected to following process: (n(1)=2"mole",T(1)=40...

    Text Solution

    |

  15. Consider the following statements and arrange in the order of true/fa...

    Text Solution

    |

  16. One mole of an ideal gas is subjected to adiabatic expansion form init...

    Text Solution

    |

  17. A substance has a normal boiling point of 400K. Which of the following...

    Text Solution

    |

  18. A reaction has an equillibrium constant of 0.98 at 300K and 1.2 at 400...

    Text Solution

    |

  19. The gibbs free energy of formation of MO and CO at temperature 1000^(@...

    Text Solution

    |

  20. When water in a beaker freezes to form ice, then which of the followin...

    Text Solution

    |