Home
Class 12
CHEMISTRY
6g weak acid HA(molecular Wt. = 60 g/mol...

6g weak acid HA(molecular Wt. = 60 g/mol) is dissolved in water and formed 10 L solution, if Ka of HA is `10^(–8)`, then `p^(OH)` of solution is :-

A

`5.0`

B

`8.0`

C

`9.0`

D

`10`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

6.0 g weak acid HA (mol.mass=60 g/mol.) is dissolved in water and formed 10 m^(3) solution. If K_(a)(HA)=10^(-9), then pOH of solution is : [Given: log 4=0.6]

2.3 g of C_(2)H_(5)OH (mol. wt. 46) are dissolved in water to form 500 mL solution. The molarity of the solution is-

3g of a salt [mol. Wt. 30] is dissolved in 250 g of water the molality of the solution is

6g of urea ( molecular weight =60) was dissolved in 9.9 moles of water. If the vapour pressure of pure water is P^(@) , the vapour pressure of solution is :

6g .of Urea is dissolved in 90g .of water.The mole fraction of solute is

2g of NaOH is dissolved in water to make 1L solution. The pH of solution is A) 10.25 B)8.256 C) 12.70 D) 10.89

A bufer solution was prepared by dissolving 0.05 mol formic acid & 0.06 mol sodium formate in enough water to make 1.0 L of solution. Ka for formic acid is 1.80 xx 10^(-4) Calculate the pH of the solution.

6.0 g of urea (molecules mass = 60)was dissolved in 9.9 moles of water. If the vspour presssure of pure water is P^(@) , the vapour pressure of solution 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

    |