Home
Class 12
CHEMISTRY
At 90^(circ)C, the concentration of H(3)...

At `90^(circ)C`, the concentration of `H_(3)O^(+)` inpure water is `10^(-6) mol L^(-1)`. What is the value of `K_(w)` at this temperature?

A

`10^(-6)`

B

`10^(-8)`

C

`10^(-14)`

D

`10^(-12)`

Text Solution

Verified by Experts

The correct Answer is:
D
Given that,
`[H_(3)O^(+)] = 10^(-6) mol L^(-1)`
`K_(W) = [H_(3)O^(+)][OH^(-)] = 10^(-6) xx 10^(-6) = 10^(-12) mol L^(-1)`
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL BONDING AND STRUCTURE OF MOLECULES

    SIA PUBLICATION|Exercise MCQ|48 Videos

  • CHEMISTRY IN EVERYDAY LIFE

    SIA PUBLICATION|Exercise MCQs|36 Videos

Similar Questions

Explore conceptually related problems

At certain temperature, the H^(+) ion concentration of water is 4 xx 10^(-7) 'M then the value of K_(w) , at the same temperature is

Concentration of H_3 O^(+) of aqueous barium hydroxide is 5 xx 10^(-9) mol L^(-1) What is the molar concentration of barium hydroxide ?

The initial concentratin of N_(2)O_(5) in the following first order reaction N_(2)O_(5)(g) to 2NO_(2)(g)+(1)/(2O_(2))(g) was 1.24 xx10^(-2) mol L^(-1) at 318K. The concentration of N_(2)O_(5) after 60 minutes was 0.20xx10^(-2) mol L^(-1). Calculate the rate constant of the reaction at 138 K.

At 25^(0) C, the hydroxyl ion concentration of a basic solution is 6.75 xx 10^(-3) M.Then the value of K_(w) is

At certain temperature the proton concentration of pure water is 2.5 xx 10^(-7) M . What is the hydroxyl ion concentration ? What is the magnitude of K_w ?

SIA PUBLICATION-CHEMICAL EQUILIBRIUM AND ACIDES-BASES-MCQ
  1. Deltax = (hydration energy)- (lattice energy), for a salt Deltax is fo...

    Text Solution

    |

  2. The pH of 1 L solution is 2. It is diluted with water till its becomes...

    Text Solution

    |

  3. At 90^(circ)C, the concentration of H(3)O^(+) inpure water is 10^(-6) ...

    Text Solution

    |

  4. The pH of a solution is increased from 3 to 6. Its H'ion concentration...

    Text Solution

    |

  5. The conjugate base of NH(2)^(-) is

    Text Solution

    |

  6. 4.5 moles, each of hydrogen and iodine was heated in a sealed 10 L ves...

    Text Solution

    |

  7. Which of the following solutions cannot act as a bufler?

    Text Solution

    |

  8. Which of the following is the strongest Lewis acid?

    Text Solution

    |

  9. If the equilibrium constant for the reaction 2AB hArr A(2) + B(2) is 4...

    Text Solution

    |

  10. The value of K(p) for the reaction 2H(2)S(g) hArr 2H(2)(g) +S(2)(g) is...

    Text Solution

    |

  11. The pH of the aqueous solution containing 0.49 g H(2)SO(4) in one litr...

    Text Solution

    |

  12. The conjugate acid of NH(2)^(-) ion is

    Text Solution

    |

  13. Which of the following compounds is Lewis acid?

    Text Solution

    |

  14. The equilibrium concentration of C(2)H(4) in the following gas phase r...

    Text Solution

    |

  15. Urine normally has a pH of 6. If a patient eliminates 1.3 L of urine p...

    Text Solution

    |

  16. Which of the following can act both as Bronsted acid and Bronsted base...

    Text Solution

    |

  17. Which of the following is least likely to act as a Lewis base?

    Text Solution

    |

  18. Which of the following is not a Lewis acid?

    Text Solution

    |

  19. The equilibrium constant (K(C)) for the reaction HA +B hArr BH^(+) + A...

    Text Solution

    |

  20. In the equilibrium reaction, A(g) + 2B(g) + (g), the equilibrium const...

    Text Solution

    |