Home
Class 12
CHEMISTRY
Delta S for the reaction : MgCO(3) right...

`Delta S` for the reaction : `MgCO_(3) rightarrow MgO(s) + CO_(2)(g)`

A

0

B

`-ve`

C

`+ve`

D

`oo`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS

    ALLEN|Exercise EXERCISE -3|108 Videos

  • THERMODYNAMICS

    ALLEN|Exercise EXERCISE -4|18 Videos

  • THERMODYNAMICS

    ALLEN|Exercise EXERCISE -1B|22 Videos

  • TEST PAPERS

    ALLEN|Exercise MATHEMATICS|2 Videos

  • Thermodynamics And Thermo Chemistry

    ALLEN|Exercise All Questions|40 Videos

Similar Questions

Explore conceptually related problems

Delta S for the reaction , MgCO_(3)(s)rarr MgO(s)+CO_(2)(g) will be :

Equilibrium constant Kp for following reaction: MgCO_(3) (s) hArr MgO(s) + CO_(2) (g)

Equilibrium constant Kp for following reaction: MgCO_(3) (s) hArr MgO(s) + CO_(2) (g)

In the preparation of MgO, the reaction is MgCO_(3)(s) hArr MgO(s) + CO_(2)(g) Experiments carried out between 50^(@) C and 950^(@) C led to a set of K_(p) values fitting an empirical equation log K_(p) = 7.310 - (8500)/(T) . If the reaction is carried out in quiet air, then

For the reaction aA(s) + bB(g) rightarrow dD(s) + cC(g) . Then

Calorific value of ethane, in k J/g if for the reaction 2C_(2)H_(6) + 7O_(2) rightarrow 4CO_(2) + 6 H_(2)O, Delta H = -745.6 kcal

It is planned to carry out the reaction: CaCO_(3)(s) hArr CaO(s) +CO_(2)(g) at 1273K and 1 bar pressure. Delta_(r)G^(Theta) = 176 kJ mol^(-1) and Delta_(r)S^(Theta) = 157.2 kJ mol^(-1) a. Is the reaction spontaneous at this temperature and pressure ? b. Calculate the value of i. K_(p) at 1273K for the reaction ii. partial pressure of CO_(2) at equilibrium

Write expression for K_(p)"and"K_(c) for the reaction CaCO_(3)(S)harrCaO(S)+CO_(2)(g) .

Given the enthalpy of formation of CO_(2)(g) is -94.0 KJ, of CaO(s) is -152 KJ, and the enthalpy of the reaction CaCO_(3)(s) rarr CaO(s)+CO_(2)(g) is 42KJ, the enthalpy of formation of CaCO_(3) (s) is

Write the unit of equlibrium constant (K_(c)) for the given reaction. BaCO_(3)(s)hArrBaO(s)+CO_(2)(g)

ALLEN-THERMODYNAMICS -EXERCISE -2
  1. An adiabatic process is one in which :-

    Text Solution

    |

  2. Entropy means

    Text Solution

    |

  3. Delta S for the reaction : MgCO(3) rightarrow MgO(s) + CO(2)(g)

    Text Solution

    |

  4. Change in entropy is negative for

    Text Solution

    |

  5. In which reaction Delta S is positive :-

    Text Solution

    |

  6. When the egg is hard boiled, there

    Text Solution

    |

  7. If S^@" for "H(2), Cl2 and HCl are 0.13, 0.22 and 0.19" kJ K"^(-1)"mol...

    Text Solution

    |

  8. Which has the least entropy :

    Text Solution

    |

  9. When two gases are mixed the entropy :-

    Text Solution

    |

  10. The enthalpy of vaporization for water is 186.5 KJ mol^(−1) ,the entro...

    Text Solution

    |

  11. Calculate the enthalpy of vaporisation per mole for ethanol. Given Del...

    Text Solution

    |

  12. If 900J//g of heat is exchanged at boiling point of water then water...

    Text Solution

    |

  13. Calculate the enthalpy of vaporisation per mole for ethanol. Given Del...

    Text Solution

    |

  14. 5 mole of an ideal gas expands reversibly from a volume of 8" dm"^(3)"...

    Text Solution

    |

  15. In a spontaneous irreversible process the total entropy of the system ...

    Text Solution

    |

  16. The total entropy change for a system and its surroundings increases, ...

    Text Solution

    |

  17. Calculate the entropy of Br(2)(g) in the reaction H(2)(g)+Br(2)(g)rarr...

    Text Solution

    |

  18. Ammonium chloride when dissolved in water leads to a cooling sensation...

    Text Solution

    |

  19. In which of the following case entropy decreases

    Text Solution

    |

  20. Which of the following state function is not zero at standard state :-

    Text Solution

    |