Home
Class 12
CHEMISTRY
In which of the following reactions, sta...

In which of the following reactions, standard reaction entropy changes `(DeltaS^(@))` is positive and standard Gibbs energy change `(DeltaG^(@))` decreases sharply with increasing temperature ?

A

`Mg(s) + 1/(2O_(2))(g) rightarrow MgO(s)`

B

`1/2 C graphite + 1/(2 O_(2))(g) rightarrow 1/2 CO_(2)(g)`

C

`C graphite + 1/(2 O_(2))(g) rightarrow CO(g)`

D

`CO(g) + 1/(2 O_(2))(g) rightarrow CO_(2)(g)`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT (Section -D) Assertion-Reason Type Questions|15 Videos
  • THERMODYNAMICS

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT (Section - B) Objective Type Questions|35 Videos
  • THE SOLID STATE

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (SECTION - D) (ASSERTION-REASON TYPE QUESTION)|20 Videos

Similar Questions

Explore conceptually related problems

In which of the following reactions,standard reaction entropy change (DeltaS^(@)) is positive and standard Gibb,s energy change (DeltaG^(@)) decreases sharply with increasing temperature?

In which of the following reactions,standard reaction entropy change (DeltaS^(@)) is positive and standard Gibb,s energy change (DeltaG^(@)) decreases sharply with increasing temperature? (a) Mg(s)+(1)/(2)O_(2)(g)to MgO(s) (b) (1)/(2)C " graphite " +(1)/(2)O_(2)(g)to (1)/(2)CO_(2)(g) (c) C " graphite " +(1)/(2)O_(2)(g)to CO(g) (d) CO(g)+(1)/(2)O_(2)(g)to CO_(2)(g)

In which of the following change entropy decreases?

In which of the following changes does entropy decrease ?

Which of the following statements regarding Gibb's energy change is correct?

Which of the following reactions is asssociated with the most negative change in entropy?

For a chemical reaction, the free energy change (DeltaG) is negative. The reaction is

Which of the following can help to predict the rate of reaction if the standard Gibb's free energy of reaction (Delta_rG^@) is known ?

The relationship between the free energy change (DeltaG) and entropy change (DeltaS) at constant temperature (T) si

If the equilibrium constant of a reaction is 2×10^3 at 25°C then the standard Gibbs free energy change for the reaction will be

AAKASH INSTITUTE ENGLISH-THERMODYNAMICS-ASSIGNMENT (Section - C) Previous Years Questions
  1. Enthalpy of combustion of carbon to CO2 is -393.5 kJ mol^(-1) Calcu...

    Text Solution

    |

  2. For the reaction: X(2)O(4)(l)rarr2XO(2)(g) DeltaU=2.1kcal , DeltaS...

    Text Solution

    |

  3. In which of the following reactions, standard reaction entropy changes...

    Text Solution

    |

  4. Standard enthalpy of vaporisation Delta("vap")H^(@) for water at 100^(...

    Text Solution

    |

  5. The enthalpy of fusion of water is 1.435 kcal/mol. The molar entropy c...

    Text Solution

    |

  6. Equal volumes of two monoatomic gases, A,B at the same temperature and...

    Text Solution

    |

  7. Which of the following is correct option for free expansion of an idea...

    Text Solution

    |

  8. If the enthalpy change for the transition of liquid water to steam is ...

    Text Solution

    |

  9. Enthalpy change for the reaction, 4H(g) to 2H2(g) is -869.6 kJ Th...

    Text Solution

    |

  10. Consider the following processes : {:(,DeltaH(kJ//"mol")),(1/2ArarrB...

    Text Solution

    |

  11. Standard entropies of X(2), Y(2) and XY(3) are 60, 40 and 50 JK^(–1) m...

    Text Solution

    |

  12. Match List I ( Equations) with List II (Type of processes) and select...

    Text Solution

    |

  13. 1 moles of an ideal gas expanded spontaneously into vaccum. The work d...

    Text Solution

    |

  14. For vaporization of water at 1 atmospheric pressure the values of Delt...

    Text Solution

    |

  15. The following teo reaction are known : Fe(2)O(3)(s)+3CO(g)rarr2Fe(s)...

    Text Solution

    |

  16. The values of DeltaH and DeltaS for the reaction, C("graphite")+CO(2...

    Text Solution

    |

  17. From the following bond energies H-H bond energy 431.37 kJ mol^(-1) ...

    Text Solution

    |

  18. Bond dissociation enthalpy of H(2), Cl(2) and HCl are 434, 242 and 431...

    Text Solution

    |

  19. For the gas-phase decomposition, PCl(5)(g)LeftrightarrowPCl(3)(g)+Cl...

    Text Solution

    |

  20. Which of the following are not state functions ? I. q+w II. Q ...

    Text Solution

    |