Home
Class 11
CHEMISTRY
Choose the correct answer. A thermodyna...

Choose the correct answer.
A thermodynamic state function is a quantity.
(a) used to determine heat changes.
(b) whose value is independent of path.
(c) used to determine pressure volume work.
(d) whose value depends on temperature only.

A

used to determine heat changes

B

whose value is independent of path

C

used to determine pressure volume work

D

whose value depends on temperature only.

Text Solution

Verified by Experts

A thermodynamic state function is a quantitiy whose value is independent of path
Functions like p,v T etc. depend only on the state of a system and not on the path.
Hence alternative (ii) is correct.
Promotional Banner

Topper's Solved these Questions

  • THE S-BLOCK ELEMENTS

    NCERT ENGLISH|Exercise EXERCISE|32 Videos

Similar Questions

Explore conceptually related problems

Choose the correct answer from the options A,B,C & D given : The reason for using aluminium in the alloy duralumin is :

Two containers A and B of equal volume V_(0)//2 each are connected by a narrow tube which can be closed by a value. The containers are fitted with pistons which can be moved to change the volumes. Initially the value is open and the containers contain an ideal gas (C_(p)//C_(v)=gamma) at atmospheric pressure P_(0) and atmospheric temperature 2T_(0) . The walls of the containers A are highly conducting and of B are non-conducting. The value is now closed and the pistons are slowly pulled out to increase the volumes of the containers to double the original value. (a) Calculate the temperature and pressure in the two containers. (b) The value is now opened for sufficient time so that the gases acquire a common temperature and pressure. Find the new values of the temperature and the pressure.

Choose the correct alternative (a), (b), (c) or (d) for each of the questions given below : For an adiabatic change of a perfect gas the relation between pressure and volume is :

Choose the correct answer The value of int0pi/2log((4-3sinx)/(4+3cosx))dx (A) 2 (B) 3/4 (C) 0 (D) -2

Assertion : A solid and hollow sphere of same diameter and same material when heated through the same temperature will expand by the same amount. Reason : The change in volume us independent of the original mass but depends on original volume.

Consider the following statements and arrange in the order of true/false as given in the codes. S_(1) : Change in state function between two states is a definite quantity and does not depend on path. S_(2) : Intensive properties can't be algebraically added or subtracted. S_(3) : Ration of two extensive properties always result into a parameter that depends on amount of substance. S_(4) : Molar heat capacity is a path function. The correct order of True//false of the above statement is :

An ideal gas is undergoing a cyclic thermodynamic process in different ways as shown in the corresponding P-V diagrams in column 3 of the table. Consider only the path from state 1 to state 2. W denotes the corresponding work done on the system. The equations and plots in the table have standard notations as used in thermodynamic process. Here is the ratio of heat capacities at constant pressure and constant volume. The number of moles in the gas in n. What one of the following options correctly represents a thermodynamic process that is used as a correction in the determination of the speed of sound in an ideas gas?

The change in the magnitude of the volume of an ideal gas when a small additional pressure DeltaP is applied at a constant temperature, is the same as the change when the temperature is reduced by a small quantity DeltaT at constant pressure. The initial temperature and pressure of the gas were 300 K and 2 atm. respectively. If |DeltaT|=C|DeltaP| then value of C in (K/atm) is __________.

An ideal gas is undergoing a cyclic thermodynamic process in different ways as shown in the corresponding P-V diagrams in column 3 of the table. Consider only the path from state 1 to state 2. W denotes the corresponding work done on the system. The equations and plots in the table have standard notations as used in thermodynamic process. Here is the ratio of heat capacities at constant pressure and constant volume. The number of moles in the gas in n. Which of the following options is the only correct representation of a process in which Delta U = Delta Q - P Delta V ?

Find out the correct match. a.First law of thermodynamics b.isothermal change c.state function d.adiabatic change i. DeltaU=W ii.q=-W iii.q+W. iv. DeltaU=q+W

NCERT ENGLISH-THERMODYNAMICS-All Questions
  1. one mole an ideal gas having volume 2 litre and at a pressure of 10...

    Text Solution

    |

  2. If water vapour is assumed to be a perfect gas, molar enthalpy change ...

    Text Solution

    |

  3. Calculate DeltaG^(Theta) for the conversion of oxygen to ozone, ((3)/(...

    Text Solution

    |

  4. Find out the value of equilibrium constant for the following reaction ...

    Text Solution

    |

  5. Choose the correct answer. A thermodynamic state function is a quanti...

    Text Solution

    |

  6. The enthalpy of combustion of methane, graphite and dihydrogen at 298 ...

    Text Solution

    |

  7. In a process, 701 J of heat is absorbed by a system and 394 J of work ...

    Text Solution

    |

  8. The reaction of cyanamide, NH(2)CN(s), with dioxygen was carried out i...

    Text Solution

    |

  9. Calculate the number of kJ of heat necessary to raise the temperature ...

    Text Solution

    |

  10. Find the value of Delta(f) H^(@) for the reaction N(2) O(4) (g) + 3 ...

    Text Solution

    |

  11. Given N(2)(g)+3H(2)(g)rarr2NH(3)(g),Delta(r)H^(Ө)= -92.4 kJ mol^(-1...

    Text Solution

    |

  12. Calculate the standard enthalpy of formation of CH(3)OH(l) from the fo...

    Text Solution

    |

  13. Calculate the enthalpy change for the process C Cl(4)(g) rarr C(g)+4...

    Text Solution

    |

  14. For an isolated system, DeltaU=0, what will be Delta S?

    Text Solution

    |

  15. For the reaction at 298 K 2A+B rarr C DeltaH=400 kJ mol^(-1) and D...

    Text Solution

    |

  16. For the reaction 2Cl(g) rarr Cl(2)(g), what are the signs of DeltaH ...

    Text Solution

    |

  17. For the reaction, 2A(g)+B(g) rarr 2D(g) DeltaU^(Θ)=-10.5 kJ and De...

    Text Solution

    |

  18. The equilibrium constant for a reaction is 10. What will be the value ...

    Text Solution

    |

  19. Comment on the thermodynamic stability of NO(g), given 1/2N(2)(g)+1/...

    Text Solution

    |

  20. Calculate the entropy change in surroundings when 1.00 mol of H(2)O(l)...

    Text Solution

    |