Home
Class 11
CHEMISTRY
Calculate pH at which an acid indicator ...

Calculate pH at which an acid indicator Hin with concentration `0.1M` changes its colour (`K_(a)` for `"Hin" = 1 xx 10^(-5)`)

Text Solution

Verified by Experts

The correct Answer is:
5
Indicator equation is : `pH = pK_(In) + "log"([In^(-)])/([Hln])`
Colour change takes place when
`[In^(-)] = [HIn]`i.e.,when `pH = pK_(In) = 5`
Promotional Banner

Topper's Solved these Questions

  • IONIC EQUILIBRIUM

    NARAYNA|Exercise Level-VI (H.W)|35 Videos

  • IONIC EQUILIBRIUM

    NARAYNA|Exercise Level-II (H.W)|51 Videos

  • HYDROGEN & ITS COMPOUNDS

    NARAYNA|Exercise LEVEL-4|21 Videos

  • PERIODIC TABLE

    NARAYNA|Exercise All Questions|568 Videos

Similar Questions

Explore conceptually related problems

Calculate the pH at which an acid indicator with K_(a) = 1.0 xx 10^(-5) changes colour when the indicator is 1.00 xx 10^(-3)M .

Calculate the pH at which an acid indicator with K_(a)=1xx10^(-5) change colour when the indicator cincentration is 1xx10^(-3)M . Also report the pH at which coloured ion is 80% present.

pH at which an acidic indicator with K_("in")=1xx10^(-5) changes colour when the indicator is 1xx10^(-3) M is

Find the pH at which an acid indicator having concentration 1.0xx10^(-4)M , having dissociation of 1% shows a colour change.

pH at which a basic indicator with K_("in")=1xx10^(-10) changes colour when the indicator is xx10^(-2)M is

At what pH will a 1xx10^(-4)M solution of an acid base indicator H In will change its colour ? (K_(b)"for" In^(-)=10^(11))

NARAYNA-IONIC EQUILIBRIUM-Level-V (H.W)
  1. 1.2g of a monoprotic acid HA,is titrated with 0.222 M NaOH solution. T...

    Text Solution

    |

  2. 1.2g of a monoprotic acid HA,is titrated with 0.222 M NaOH solution. T...

    Text Solution

    |

  3. 1.2g of a monoprotic acid HA,is titrated with 0.222 M NaOH solution. T...

    Text Solution

    |

  4. 1.2g of a monoprotic acid HA,is titrated with 0.222 M NaOH solution. T...

    Text Solution

    |

  5. 1.2g of a monoprotic acid HA,is titrated with 0.222 M NaOH solution. T...

    Text Solution

    |

  6. Read of the following passage giving the role of CO(2) buffer in contr...

    Text Solution

    |

  7. Read of the following passage giving the role of CO(2) buffer in contr...

    Text Solution

    |

  8. Read of the following passage giving the role of CO(2) buffer in contr...

    Text Solution

    |

  9. In the titration of weak acid against strong base match the pH of the ...

    Text Solution

    |

  10. Text Solution

    |

  11. Match the following (in list-1) with its equation of pH (in list-II)

    Text Solution

    |

  12. Match column I with column II.

    Text Solution

    |

  13. Neutralisation constant of HCOOH with a strong bse is 10^(8). What is ...

    Text Solution

    |

  14. A buffer solution is formeed by mixing 100 mL of 0.1 M CH(3)COOH with ...

    Text Solution

    |

  15. If the equilibrium constant for the reaction of weak acid HA with stro...

    Text Solution

    |

  16. Solublility product constant of a sparingly soluble salt MCl(2) is 4 x...

    Text Solution

    |

  17. The solubility product constant of a metal carbonate MCO(3) is 2 xx 10...

    Text Solution

    |

  18. Calculate pH at which an acid indicator Hin with concentration 0.1M ch...

    Text Solution

    |

  19. The sum of bascities of H(3)PO(4), H(3)PO(3) and H(3)PO(2) is

    Text Solution

    |

  20. Ksp of M(OH)(2) is 5 xx 10^(-16) at 25^(0)C. The pH of its saturated s...

    Text Solution

    |