Home
Class 12
CHEMISTRY
For pure water (pH=7), K(w) at 298 is 1...

For pure water `(pH=7), K_(w)` at 298 is `10^(-14)`. On adding some acid to it, its pH changes to 3. The value of `K_(w)` for this acidicfied water will be

A

`10^(-11)`

B

`10^(-14)`

C

`10^(-6)`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

The pH value of pure water at 300 K is

At 90^(@)C pure water has K_(w) = 10^(-12) . The solution with pH value 6.5 is

The pH of pure water at 50^@C is 6.63. What is the value of K_w at 50^@C ?

At a certain temperature , K_(w) of water is 9.0 xx 10^(-14) . The pH of water at this temperature is

At some high temperature the P^(OH) of water is found to be 6.7 . Then the value of K_(w) at the same temperature is

At some high temperature, K_(w) of water is 10^(-13) . Then the P^(H) of the water at the same temperature is

ALLEN-TEST PAPER 3-CHEMISTRY
  1. P hArr Q, K1 1/3RhArr 1/2Q,K2 2R hArr 2S, K3 P hArr S, K4 =? ...

    Text Solution

    |

  2. In the reaction , A(s) +B(g) + "heat" hArr 2C(s) + 2D(g) at equili...

    Text Solution

    |

  3. For which of the following gaseous reactions, the relationship log KC/...

    Text Solution

    |

  4. At which temperature, P C K K KP/KC value will be 1/4 for dissociatio...

    Text Solution

    |

  5. Equilibrium constants for (a) N2 + O2 hArr 2NO and (b) 2NO + O2 ƒhArr ...

    Text Solution

    |

  6. At t^@C temperature, the observed vapour density of A is 17.5 for the ...

    Text Solution

    |

  7. For the reaction A((s)) + 2B((g)) ƒhArr 3C((g)) . At constant pressur...

    Text Solution

    |

  8. Which of following does not show common ion effect ?

    Text Solution

    |

  9. For the reaction 3A(g)+B(g) hArr 2C(g) at a given temperature , Kc=9.0...

    Text Solution

    |

  10. The dissociation constant of acetic acid at a given temperature is 1.6...

    Text Solution

    |

  11. 6g weak acid HA(molecular Wt. = 60 g/mol) is dissolved in water and fo...

    Text Solution

    |

  12. PbOhArrPb+1/2O2, K=2xx10^(-1) ZnOhArr +1/2 O2 K=2xx10^2 CuOhArr +...

    Text Solution

    |

  13. For the reaction, 3O2(g) hArr ƒ2O3(g)KC at 25^@C for this equilibrium ...

    Text Solution

    |

  14. Acidic strength of CH3 COOH in presence of CH3 COONa :-

    Text Solution

    |

  15. Equilibrium constant KC for the following reaction at 800K is 4. NH3...

    Text Solution

    |

  16. In a flask, colourless N(2)O(4) is in equilibrium with brown-coloured ...

    Text Solution

    |

  17. A + B ƒhArr C + D, Kc = 5 If at some time the concentration of A, B, ...

    Text Solution

    |

  18. For pure water (pH=7), K(w) at 298 is 10^(-14). On adding some acid t...

    Text Solution

    |

  19. What should be the concentration of a weak electrolyte AB, When its de...

    Text Solution

    |

  20. Which of the following statement for pure water is wrong ?

    Text Solution

    |