Home
Class 12
CHEMISTRY
When 12.0 g of carbon reacted with limit...

When 12.0 g of carbon reacted with limited quantity of oxygen, 57.5 kcal of heat was produced, calculate the number of moles of CO produced `(Delta_(f)H(CO_(2))=-94.5 cal, Delta_(f)H(CO)= -21.41kcal.`

A

0.54 mol

B

0.50 mol

C

0.64 mol

D

0.74 mol

Text Solution

Verified by Experts

The correct Answer is:
B
`12 g C =1` mole . Suppose CO product = x moles.
Then `CO_2` produced = (1+x) mole
`therefore x (-21.41)+(1-x) (-94.05)=- 57.5 `
This on solving gives x = 0.50 mole.
Promotional Banner

Topper's Solved these Questions

  • Chemical Thermodynamics & Energetics

    NIKITA PUBLICATION|Exercise QUESTION FROM COMPETITIVE EXAM|35 Videos

  • CHEMICAL KINETICS

    NIKITA PUBLICATION|Exercise MCQs|351 Videos

  • CHEMISTRY IN EVERYDAY LIFE

    NIKITA PUBLICATION|Exercise MCQs|224 Videos

Similar Questions

Explore conceptually related problems

When 12.0g of C reacted with a limited quantity of oxygen, 57.5 kcal of heat was produced. Calculate the number of CO and number of moles of CO_(2) produced. Given C +O_(2) rarr CO_(2), Delta_(f)H = - 94.05 kcal C +1//2O_(2) rarr CO, Delta_(f)H =- 26.41 kcal

When 1 L of CO_2 is heated with graphite , the volume of the gases collected is 1.5 L. Calculate the number of moles of CO produced at STP

When 12.0g of carbon reacted with oxygen to form CO and CO_(2) at 25^(@)C and constant pressure, 75.0kcal of heat was liberated and no carbon remained . Calculate the mass of oxygen which reacted. (DeltaH_(f)^(@)(CO_(2))=-95kcal mol^(-1),DeltaH_(f)^(@)(CO)=-24kcal mol^(-1))

The combustion of 1 mol of benzene takes place at 298 K and 1 atm . After combustion, CO_(2)(g) and H_(2)O(l) are produced and 3267.0 kJ of heat is librated. Calculate the standard entalpy of formation, Delta_(f)H^(Θ) of benzene Given: Delta_(f)H^(Θ)CO_(2)(g) = -393.5 kJ mol^(-1) Delta_(f)H^(Θ)H_(2)O(l) = -285.83 kJ mol^(-1) .

The heat evolved from the combustion of carbon is used to heat water. Assuming 50% efficiency, calculate mole of water vaporized at its boiling point Delta H_(f)=(CO_(2))=-94K cal//mol and DeltaH_(vap)(H_(2)O)=9.6kcal //mol) and 6g C is undergoing combustion

When 12.0g of carbon (graphite)reacted with oxygen to form CO and CO_(2) at 25^(@)C and constant pressure, 252 kJ of heat was released and no carbon remained. If Delta H_(f)^(0)(CO,g)= -110.5 kJ mol^(-1) and Delta H_(f)^(0)(CO_(2),g)= -393.5 kJ mol^(-1) ,calculate the mass of oxygen consumed.

When 12.0g of C reacted with oxygen to form CO and CO_(2) at 25^(@)C at constant pressure, 313.8 kJ of heat was released and no carbon remained. Calculate the mass of oxygen which reacted. Delta_(f)H^(Theta) (CO,g) =- 110.5 kJ mol^(-1) and Delta_(r)H^(Theta) (CO,g) =- 393.5 kJ mol^(-1)

NIKITA PUBLICATION-Chemical Thermodynamics & Energetics-QUESTION FROM COMPETITIVE EXAM
  1. When 12.0 g of carbon reacted with limited quantity of oxygen, 57.5 kc...

    Text Solution

    |

  2. For an endothermic reaction where DeltaH represent the enthalpy of rea...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  5. Three moles of an ideal gas expanded spontaneously into vacuum. The wo...

    Text Solution

    |

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

    Text Solution

    |

  7. The following two reactionas are known FeO(3)(s)+3CO(g)rarr2Fe(s)+CO...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  10. Consider the following processes :- {:(,DeltaH(kJ//mol)),((1)/(2)A r...

    Text Solution

    |

  11. In view of the signs of Delta(r)G^(0) for the following reactions Pb...

    Text Solution

    |

  12. The value of enthalpy change (DeltaH) for the reaction C(2)H(5)OH (l...

    Text Solution

    |

  13. Consider the reaction, 4NO(2)(g)+O(2)(g)rarr2N(2)O(5)(g),Delta(r )H=...

    Text Solution

    |

  14. Match the transformation in colums I with appropriate options in colum...

    Text Solution

    |

  15. The entropy change involved in the isothermal reversible expansion of ...

    Text Solution

    |

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

    Text Solution

    |

  17. The Gibbs energy for the decomposition of Al(2)O(3) at 500^(@)C is as...

    Text Solution

    |

  18. The entropy change involved in the isothermal reversible expansion of ...

    Text Solution

    |

  19. The incorrect expression among the following is

    Text Solution

    |

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

    Text Solution

    |

  21. The enthalpy of fusion of water is 1.435 kcal//"mole". The molar entro...

    Text Solution

    |