Home
Class 11
CHEMISTRY
A process is taking place at constant te...

A process is taking place at constant temperature and pressure. Then

A

`Delta H= Delta E`

B

`Delta H= T Delta S`

C

`Delta H= 0`

D

`Delta S= 0`

Text Solution

Verified by Experts

The correct Answer is:
B
`Delta G= Delta H- T Delta S`
`Delta G = Delta H- T Delta S`
at constant temperature and pressure `Delta G=0`
`0= Delta H - T Delta S " so " Delta H= T Delta S`
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS AND THERMOCHEMISTRY

    ERRORLESS|Exercise PAST Years Questions|56 Videos

  • THERMODYNAMICS AND THERMOCHEMISTRY

    ERRORLESS|Exercise (Assertion & Reason)|18 Videos

  • THERMODYNAMICS AND THERMOCHEMISTRY

    ERRORLESS|Exercise NCERT Based Questions (Bond Energy)|15 Videos

  • THE S-BLOCK ELEMENTS

    ERRORLESS|Exercise Assertion & Reason|10 Videos

Similar Questions

Explore conceptually related problems

a A_((g)) + bB_((g)) rarr cC_((g)) + d D_((g)) Reaction is taking place at constant Temperature, Pressure & Volume, then correct statement(s) is/are:

The changes in gibbs energy (Delta G) of a system for a process at constant temperature and pressure is

Three processes compose a thermodynamic cycle shown in the accompanying P-V , diagram of an ideal gas. Process 1 rarr 2 take place at constant temperature, during this process 60 J of heat enters the system. Process 2 rarr 3 takes place at constant volume. During this process 40 J of heat leaves the system. Process 3 rarr 1 is adiabatic. What is the change in internal energy of the during process 3 rarr 1 ?

In an irreversible process taking place at constant P and T in which only pressure volume work is being done by the system the change in Gibb's energy (DeltaG) and change in entropy (Delta) , satisfy the criterion:

The oxidation of SO_(2) by O_(2) to SO_(3) is an exothermic process. The yield of SO_(3) is maximum if i. Temperature is increased and pressure is kept constant ii. Temperature is reduced and pressure is kept constant iii. Pressure is increased iv. Temperature and pressure both are increased The correct option is:

A heat engine carries one mole of an ideal mono-atomic gas around the cycle as shown in the figure below. Process 1 rarr 2 takes place at constant volume, process 2 rarr 3 is adiabatic and process 3 rarr 1 takes place at constant pressure. Then the amount of heat added in the process 1 rarr2 is

ERRORLESS-THERMODYNAMICS AND THERMOCHEMISTRY-NCERT Based Questions (Free Energy and Work Function)
  1. For the reaction: X(2)O(4)(l)rarr2XO(2)(g) DeltaU=2.1 cal , DeltaS...

    Text Solution

    |

  2. DeltaG in Ag(2)Oto2Ag+1//2O(2) at a certain temperature is -10kJ"mol"^...

    Text Solution

    |

  3. As O2 (I) is cooled at 1 atm pressure , it freezes to form solid I at ...

    Text Solution

    |

  4. Which of the following statements is true

    Text Solution

    |

  5. The value of Delta H and Delta S for five different reaction are given...

    Text Solution

    |

  6. A reaction occurs spontaneously if

    Text Solution

    |

  7. The standard Gibb's free energy change, DeltaG^(@) is related to equil...

    Text Solution

    |

  8. Which of the following is not correct

    Text Solution

    |

  9. Standard entropy of X(2) , Y(2) and XY(3) are 60, 40 and 50JK^(-1)mol...

    Text Solution

    |

  10. An endotthermic reaction is non-spontaneous at freezing point of water...

    Text Solution

    |

  11. A process is taking place at constant temperature and pressure. Then

    Text Solution

    |

  12. If an endothermic reaction occurs spontaneously at constant temperatur...

    Text Solution

    |

  13. Thermodynamically the most stable form of carbon is

    Text Solution

    |

  14. If the equilibrium concentration of the components in a reaction A+...

    Text Solution

    |

  15. For reversible reaction : X((g))+3Y((g))hArr 2Z((g)), DeltaH=-"40 kJ" ...

    Text Solution

    |

  16. For the reversible reaction : A(s)+B(g)iffC(g)+D(g) : DeltaG^(@)=-3...

    Text Solution

    |

  17. In which of the following reactions,standard reaction entropy change(D...

    Text Solution

    |

  18. Following reaction occurring in an automobile 2C(8)H(18)(g)+25O(2)(g) ...

    Text Solution

    |

  19. The densities of graphite and diamond at 298K are 2.25 and 3.31gcm^(-3...

    Text Solution

    |

  20. The equilibrium constant of a reaction at 298 K is 5 xx 10^(-3) and at...

    Text Solution

    |