Home
Class 11
CHEMISTRY
White solid balls of naphthalene (C(10)H...

White solid balls of naphthalene `(C_(10)H_(8))` used as moth balls were kept in a closed container at room temperature `(27^(@)C)` . The vapour pressure above the balls was found to be 0.10 mm Hg. The value of `K_(c)` for the sublimation equilibrium ,
` C_(10)H_(8) (s) hArr C_(10)H_(8) (v) ` is

A

` 1*32 xx 10^(-4)`

B

` 5*36 xx 10^(-6)`

C

` 3*4 xx 10^(-7)`

D

` 0*10`

Text Solution

Verified by Experts

The correct Answer is:
B
` K_(p) = p_(C_(10)H_(g)= )0*10 " mm"`
` = (0*10)/760 " atm" = 1*32 xx 10^(-4) "atm " `
` C_(10)H_(8) (s) hArr C_(10) H_(g) (g) , Delta n = 1 `
` K_(c) = (K_(p))/(RT)^(Delta n)= (K_(p))/(RT) = (1*32 xx 10^(-4))/(0*0821 xx 300) `
`= 5*36 xx 10^(-6)`
Promotional Banner

Topper's Solved these Questions

  • EQUILIBRIUM IN PHYSICAL AND CHEMICAL PROCESSES

    PRADEEP|Exercise Competition Focus (Jee(Main and advanced)/Medical Entrance) II. MULTIPLE CHOICE QUESTIONS (with one or More One correct answer)|6 Videos

  • EQUILIBRIUM IN PHYSICAL AND CHEMICAL PROCESSES

    PRADEEP|Exercise Competition Focus (Jee(Main and advanced)/Medical Entrance) III. MULTIPLE CHOICE QUESTIONS (Based on the given Passage/Comprehension)|7 Videos

  • EQUILIBRIUM IN PHYSICAL AND CHEMICAL PROCESSES

    PRADEEP|Exercise ANALYTICAL QUESTIONS AND PROBLEMS WITH ANSWER/SOLUTIONS (PROBLEMS)|20 Videos

  • EQUILIBRIUM

    PRADEEP|Exercise Competition Focus (VIII. Assertion-Reason Type Questions)|16 Videos

  • HYDROCARBONS

    PRADEEP|Exercise Competition Focus (JEE(main and advanced)/Medical Entrance) VIII. ASSERTION - REASON TYPE QUESTIONS|31 Videos

Similar Questions

Explore conceptually related problems

Naphthalene, a white solid used to make mothballs, has a vapour pressure of 0.10 mmHg at 27^(@)C . Hence, K_(P) and K_(c) for the equilibrium are C_(10)H_(8)(s) rarr C_(10)H_(8)(g)

The vapour pressure of water at 25°C is 0.0313 atm. Calculate the values of K_(p) and Kc at 25°C for the equilibrium H_(2)O(1)hArr H_(2)O(g) .

Naphthalene, a white solid used to make mothballs, has a vapour pressure of 0.10 mm Hg at 27^(@)C . Hence K_(p) and K_(c) for the equilibruim are : C_(10)Hg(s)hArr C_(10)Hg(g)

Assuming ideal behavior, what mass of naphthalence (C_(10)H_(8)) would have to be dissolved in 200 g of octane (C_(8)H_(18)) to lower the vapor pressure of pure octane by 20%

C_(8)H_(10) has total number of isomers containing benzene ring equal to :

Consider the sublimation of mothballs at 27^(@)C in a vessel having dimensions 10xx10xx10m^(3) . Assume that the mothballs are pure solid naphthalene (density 1.16g//cm^(3) ) and that they are spheres with a diameter 12.0 mm . The equilibrium constant (K_(c)) for the sublimation of napthalene C_(10)H_(8(s))hArrC_(10)H_(8(v)) is 5.40xx10^(-6) at 27^(@)C . ( a ) When excess mothballs are present, how many gaseous naphthalene molecules are in the room at equilibrium ( b ) How many mothballs are required to saturate the room with gaseous naphthalene?

1 mole of naphthalene (C_(10)H_(8)) was burnt in oxygen gas at 25^(@)C at constant volume. The heat evolved was found to be 5138.8kJ. Calculate the heat of reaction at constant pressure. (R=8.3JK^(-1)" "mol^(-1))

PRADEEP-EQUILIBRIUM IN PHYSICAL AND CHEMICAL PROCESSES-Competition Focus (Jee(Main and advanced)/Medical Entrance) I. MULTIPLE CHOICE QUESTIONS (with one correct answer)
  1. The temperature at which K(c) and K(p) will have the same value for t...

    Text Solution

    |

  2. The pressure at which equilibrium constant in terms of pressures is fo...

    Text Solution

    |

  3. White solid balls of naphthalene (C(10)H(8)) used as moth balls were k...

    Text Solution

    |

  4. For the reaction, SO(2)(g) + (1)/(2)O(2)(g)hArrSO(3) (g), If K(p) = K(...

    Text Solution

    |

  5. For the reaction CO(g)+CI(2)(g)hArrCOCI(2)(g) K(p)//K(c ) is equal...

    Text Solution

    |

  6. The equilibrium constant K(p) for the reaction H(2)(g)+I(2)(g) hArr 2H...

    Text Solution

    |

  7. Given : 2 N(2) O (g) hArr 2 N(2) (g) + O(2) (g) , K= 3*5 xx 10^(33) ...

    Text Solution

    |

  8. The equilibrium constant for the reaction N(2)(g)+O(2)(g) hArr 2NO(g...

    Text Solution

    |

  9. If the equilibrium constant for N(2) (g) + O(2)(g) hArr 2NO(g) is K...

    Text Solution

    |

  10. Consider the following gaseous equilibria with equilibrium constant K(...

    Text Solution

    |

  11. The following equilibria are given by : N(2)+3H(2) hArr 2NH(3), K(1)...

    Text Solution

    |

  12. For the chemical equilibrium, CaCO(3)(s) hArr CaO(s)+CO(2)(g) Delt...

    Text Solution

    |

  13. A schematic plot of In K(eq) versus inverse of temperature for a rea...

    Text Solution

    |

  14. The variation of equilibrium constant ( K) with temperature ( T) was s...

    Text Solution

    |

  15. In the preparation of CaO from CaCO(3) using the equilibrium, CaCO(3...

    Text Solution

    |

  16. For a given exothermic reaction , K(p) and k'(p) are the equilibrium c...

    Text Solution

    |

  17. If the value of equilibrium constant for a particular reaction is1.6xx...

    Text Solution

    |

  18. An aqueous solution contains 0.10 M H2S and 0.20 M HCl. If the equilib...

    Text Solution

    |

  19. The following equilibrium constants are given : N(2) + 3 H(3) hArr ...

    Text Solution

    |

  20. The dissociation constants for acetic acid and HCN at 25^(@)C are 1.5x...

    Text Solution

    |