Home
Class 11
CHEMISTRY
The K, of an indicator HIn is 9 x 10^(4)...

The K, of an indicator HIn is `9 x 10^(4)`, The percentage of the basic form of indicator is 10x in a solution of pH = 4. What is x ?

Text Solution

Verified by Experts

The correct Answer is:
9
` pH =pK_(In) +log"" (In^(-))/( HI_n) , 4 =4- log 9 +log ""(In^(-))/(HI_n)`
` 9= ( In^(-))/( HI_n) rArr % " of " In^(-) =90 %`
Promotional Banner

Topper's Solved these Questions

  • IONIC EQUILIBRIUM

    AAKASH SERIES|Exercise PRACTICE SHEET (EXERCISE -I LEVEL -I (MAIN ) (Straight Objective Type Questions))|34 Videos

  • IONIC EQUILIBRIUM

    AAKASH SERIES|Exercise PRACTICE SHEET (EXERCISE -I LEVEL -II (ADVANCED ) (Straight Objective Type Questions))|14 Videos

  • IONIC EQUILIBRIUM

    AAKASH SERIES|Exercise LECTURE SHEET (EXERCISE -IV LEVEL -II (ADVANCED) (Matrix Matching Type Questions))|4 Videos

  • HYDROGEN AND ITS COMPOUNDS

    AAKASH SERIES|Exercise QUESTIONS FOR DESCRIPTIVE ANSWERS|20 Videos

  • ISOMERISM

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE ( PRACTICE SHEET (ADVANCED) INTEGER TYPE QUESTIONS)|10 Videos

Similar Questions

Explore conceptually related problems

K_a for HF is 3.2 xx 10^(-4) . Calculate the percentage of dissociation in 0.02 M HF solution.

An acid -base indicator has a Ka of 3.0 xx 10^(-5) The acid form of the indicator is red and the basic form is blue. Then

An acidic indicator ionises as I_(n) H hArr "In"^(-) + H^(+) . The molecular and ions of the indicator show different colours. The indicator changed it colour if its acidic of basic form completely predominant. What is the percentage of basic form acidic indicator (p^(ka) = 6) is an aqeous NaCl solution at 25^(@) C

An acidic indicator ionises as I_(n) H hArr "In"^(-) + H^(+) . The molecular and ions of the indicator show different colours. The indicator changed it colour if its acidic of basic form completely predominant. An indicator with P^(Kin) = 5 is added to a solution with p^(H) = 5 . What is the percentage of acidic form of the indicator

K_a of weak acid HA is 1.8 xx 10^(-4) . If the pH of a buffer solution made up of HA and NaA of total molarity is 0.29 having ph=4.4, what is the molarity of HA?

Let the colour of the indicator (Hin colourles) will be visible only when its ionised form (pink) is 25 or more in a solution. Suppose Hln (pK_(In) = 9.0) is added to a solution of pH = 9.6. Predict what will happen. (Take log 2 = 0.3)

A saturated 0.01 M H_(2) S solution is buffered at pH =3 with exactly sufficient Pb (NO_(3))_(2) to not precipitate Pbc. K_(a) of H_(2) S = 10^(-23),K_(sp) of Pbs = 10^(-28) . The concentration of Pb^(+2) in the solution is 10^(-x) . What is x ?

AAKASH SERIES-IONIC EQUILIBRIUM -LECTURE SHEET (EXERCISE -IV LEVEL -II (ADVANCED) (Integer Type Questions))
  1. Calculate the pH at which an acid indicator with K(a), = 1.0 xx 10^(-5...

    Text Solution

    |

  2. The K, of an indicator HIn is 9 x 10^(4), The percentage of the basic ...

    Text Solution

    |

  3. K(sp) of M(OH)(x), is 27 xx 10^(-12) and its solubility in water is 10...

    Text Solution

    |

  4. Solubility products of ACO(3), BSO(4), and ASO(4), are 4 xx 10^(-10), ...

    Text Solution

    |

  5. The solubility product of a springly soluble metal hydroxide [M(OH)2] ...

    Text Solution

    |

  6. The solubility product of SrF(2) in water is 8xx10^(-10) Calculate it...

    Text Solution

    |

  7. Few drops of dilute solution of AgNO3 are added to a litre of 0.1 M so...

    Text Solution

    |

  8. A saturated 0.01 M H(2) S solution is buffered at pH =3 with exactly s...

    Text Solution

    |

  9. Calculate the concentration of free silver ion [Ag^(+) ] in an aqueous...

    Text Solution

    |

  10. Calculate the pH at which an acid indicator with Ka =1.0 xx 10^(-5) ch...

    Text Solution

    |

  11. The K, of an indicator HIn is 9 x 10^(4), The percentage of the basic ...

    Text Solution

    |

  12. K(sp) of M(OH)(x), is 27 xx 10^(-12) and its solubility in water is 10...

    Text Solution

    |

  13. Solubility products of ACO3 , BSO4 and ASO4 are 4xx10^(-10) , 6xx 10^...

    Text Solution

    |

  14. The solubility product of a springly soluble metal hydroxide [M(OH)2] ...

    Text Solution

    |

  15. The solubility product of SrF(2) in water is 8xx10^(-10) Calculate it...

    Text Solution

    |

  16. Few drops of dilute solution of AgNO3 are added to a litre of 0.1 M so...

    Text Solution

    |

  17. A saturated 0.01 M H(2) S solution is buffered at pH =3 with exactly s...

    Text Solution

    |

  18. Calculate the concentration of free silver ion [Ag^(+) ] in an aqueous...

    Text Solution

    |