Home
Class 12
CHEMISTRY
What fraction of an indicator Hi n is th...

What fraction of an indicator `Hi n` is the basic form at a `pH` of `5` if the `pK_(a)` of the indicator is `6`?

A

`(9)/(10)`

B

`(1)/(11)`

C

`(10)/(11)`

D

`(1)/(10)`

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • IONIC EQUILIBRIUM

    RESONANCE ENGLISH|Exercise Part 1 only one option correct type|7 Videos

  • IONIC EQUILIBRIUM

    RESONANCE ENGLISH|Exercise PART-2 Single and double value integer type|9 Videos

  • IONIC EQUILIBRIUM

    RESONANCE ENGLISH|Exercise Exercise 1 part 1|14 Videos

  • HYDROCARBON

    RESONANCE ENGLISH|Exercise ORGANIC CHEMISTRY(Hydrocarbon)|50 Videos

  • IUPAC NOMENCLATURE & STRUCTURAL ISOMERISM

    RESONANCE ENGLISH|Exercise Advanced Level Problems Part-5|2 Videos

Similar Questions

Explore conceptually related problems

What fraction of an indicator H"in" is in the basic form at a pH of 6 if pK_(a) of the indicator is 5 ?

The pH indicators are

What is the role of indicator in titration ?

An acid-base indicator has a K_(a) of 3.0 xx 10^(-5) . The acid form of the indicator is red and the basic form is blue. (a) By how much must the pH change in order to change the indicator from 75% red to 75% blue?

A certain acid-base indicator is red in acid solution and blue in basic medium. At pH=5 75% of the indictor is present in the solution in its blue form. Calculate the pH at which indicator shows 90% red form ?

For the indicator 'HIn' the ratio (Ind^(Θ))//(HIn) is 7.0 at pH of 4.3 . What is K_(eq) for the indicator.

Acid-base indicator such as methy 1 orange, phenolphthalein, and bromothymol blue ate substances which change colour accroding to the hydrogen ion concentration of the solution to which they are added. Most indicators are weak acids (or more rarely weak base) in which the undissociated and dissociated forms have different and distinct colours. If methy 1 orange is used as the examples and the un-dissociated forms is written as HMO , then dissociation occurs as shown below: Reaction: {:(HMOhArr,H^(o+)+,MO^(Theta),,),(Red,"Colourless","Yellow",,):} The indicator should have a sharp colour change with the equivalence point of the titration. Usually the colour change of the indicator occurs over a range of about two pH units. It should be noted that the eye cannot detect the exact end point of the tiytration. The pK_(a) of the indicator should be near the pH of the solution at the equivalance point. Which of the following sitution exists at the equivalence point of titration?

Bromophenol blue is an indicator with a K_(a) value of 5.84 xx 10^(-5) . What is the percentage of this indicator in its basic form at a pH of 4.84 ?

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. Dissociation constant of an acidic indicator is 10^(-5) . At what p^(H) 80% of the indicator exists in molecular form ?

The rapid change of pH near the stoichiometric point of an acid-base titration is the basic of indicator detection. pH of the solution is related to the ratio of the concentration of conjugate acid (Hin) and base (In^(-)) forms of the indicator by the expression

RESONANCE ENGLISH-IONIC EQUILIBRIUM-Exercise 1 part 2 only one option correct type
  1. pH of a mixture containing 0.10 M X^(-) and 0.20 M HX is: [pK(b)(X^(-)...

    Text Solution

    |

  2. K(a) for HCN is 5 xx 10^(-10) at 25^(@)C. For maintaining a constant p...

    Text Solution

    |

  3. A buffer solution made up of BOH of total maturity 0.29M has pH=9.6 an...

    Text Solution

    |

  4. The pH of a solution resulting from the addition of 12.5mL of 0.1M HCl...

    Text Solution

    |

  5. What % of the carbon in the H(2)CO(3)-HCO(3)^(-) buffer should be in t...

    Text Solution

    |

  6. In the system X+2Y⇌Z, the equilibrium concentrations are, [X]=0.06 mol...

    Text Solution

    |

  7. Buffer capacity of a buffer solution is x, the volume of 1 M NaOH adde...

    Text Solution

    |

  8. Select the correct set of the statements for an acid type indicator us...

    Text Solution

    |

  9. What is the role of indicator in titration ?

    Text Solution

    |

  10. A certain indicator (an organic dye) has pK(a)=5. For which of the fol...

    Text Solution

    |

  11. The best indicator for detection of end point in titration of a weak a...

    Text Solution

    |

  12. At pH lt3.1, the indicator methyl red is coloured red ,at pH gt 6.3 , ...

    Text Solution

    |

  13. What fraction of an indicator Hi n is the basic form at a pH of 5 if t...

    Text Solution

    |

  14. Upon titrating 50mL of 1.96%(w//v) H(2)SO(4) with a KOH solution (cont...

    Text Solution

    |

  15. 100 mL of 0.02 M benzoic acid (pK(a)=4.20) is titrated using 0.02 M Na...

    Text Solution

    |

  16. Which of the following solutions have different pH? 100mL" of "0.2m"...

    Text Solution

    |

  17. Upon titrating a solution of weak monoprotic acid with a weak monoacid...

    Text Solution

    |

  18. In the neutralization process of H(3)PO(4) and NaOH, the number of buf...

    Text Solution

    |

  19. Calculate the pH of 0.1 M NH3 solution . Given that Kb = 1.8 X 10^(-5)...

    Text Solution

    |

  20. What will be the pH at the equivalence point during the titration of a...

    Text Solution

    |