Home
Class 11
CHEMISTRY
There are three acid-base indicators. Me...

There are three acid-base indicators. Methyl orange (end point at `pH=4`), bromothymol blue (end point at `pH-7`), phenolphthalein (end point at `pH=9`). Which is the most suitable indicator for the following titrations?
(a). `H_2SO_4` with KOH
(b). KCn with HCl
(c). `NH_3` with `HNO_3`
(d). HF with NaOH

Text Solution

Verified by Experts

a. Any `(S_(A) vs S_(B))`
b. Methy`1` orange `(S_(A) vs salt` of `W_(A)//W_(B))`
c. Methy`1` orange `(S_(A) vs W_(B))`
d. Phenolphthalein `(W_(A)vs S_(B))`
Promotional Banner

Topper's Solved these Questions

  • IONIC EQUILIBRIUM

    CENGAGE CHEMISTRY ENGLISH|Exercise Ex 8.1|18 Videos

  • IONIC EQUILIBRIUM

    CENGAGE CHEMISTRY ENGLISH|Exercise Ex 8.2|27 Videos

  • HYDROGEN, WATER AND HYDROGEN PEROXIDE

    CENGAGE CHEMISTRY ENGLISH|Exercise Subjective Archive (Subjective)|3 Videos

  • ISOMERISM

    CENGAGE CHEMISTRY ENGLISH|Exercise Assertion-Reasoning Type|1 Videos

Similar Questions

Explore conceptually related problems

Name of the suitable indicators which could be used in the following titrations : H_2SO_4 against KOH

What indicators will be suitable for the following acid-base titrations: a. HCOOH against NaOH b. HBr against KOH c. NH_(4)OH with HNO_(3)

Write the conjugate bases for the following Bronsted acids (a) HF (b) H_(2)SO_(4) (c) HCO_(3)^(Θ)

Write the conjugate bases for the following Brddotonsted acids (a) HF (b) H_(2)SO_(4) (c) HCO_(3)^(Θ)

Write the conjugate bases for the following Brddotonsted acids (a) HF (b) H_(2)SO_(4) (c) HCO_(3)^(Θ)

A weak base MOH was titrated against a strong acid. The pH at 1/4 th equivalence point was 9.3. What will be the pH at 3/4 th equivalence point in the same titration? (log3=0.48)

In acid-base titration react rapidly to neutralise each other. Equivalence point is a point at which the acid and the base (or oxidising agent and reducing agent) have beem added in equivalent quantities. The end point in the point at which the titration stops. since the purpose of the indicator is to stop the titration close to the point at which the acid and base were added in equivalent quantities, it is important that the equivalent point and the end point be as close as must change colour at a pH close to that of a solution of the salt of the acid base. Singificantly, the pH changes most rapidly near the equivalent point. The exact shape of a titration curve depends on K_(a) and K_(b) of acid and base. The pH at equivalence point is

In acid-base titration react rapidly to neutralise each other. Equivalence point is a point at which the acid and the base (or oxidising agent and reducing agent) have beem added in equivalent quantities. The end point in the point at which the titration stops. since the purpose of the indicator is to stop the titration close to the point at which the acid and base were added in equivalent quantities, it is important that the equivalent point and the end point be as close as must change colour at a pH close to that of a solution of the salt of the acid base. Singificantly, the pH changes most rapidly near the equivalent point. The exact shape of a titration curve depends on K_(a) and K_(b) of acid and base. The curve represents the titration of

In acid-base titration react rapidly to neutralise each other. Equivalence point is a point at which the acid and the base (or oxidising agent and reducing agent) have beem added in equivalent quantities. The end point in the point at which the titration stops. since the purpose of the indicator is to stop the titration close to the point at which the acid and base were added in equivalent quantities, it is important that the equivalent point and the end point be as close as must change colour at a pH close to that of a solution of the salt of the acid base. Singificantly, the pH changes most rapidly near the equivalent point. The exact shape of a titration curve depends on K_(a) and K_(b) of acid and base. The following curve represents titration curve of HCI against KOH . The pH at equivalent point is Examine the titration curve below and answer the question.

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?

CENGAGE CHEMISTRY ENGLISH-IONIC EQUILIBRIUM-Archives Subjective
  1. There are three acid-base indicators. Methyl orange (end point at pH=4...

    Text Solution

    |

  2. How much moles of sodium propionate should be added to 1L of an aqueou...

    Text Solution

    |

  3. Given reason for the statement that the pH of an aqueous solution of s...

    Text Solution

    |

  4. 20 mL of 0.2M sodium hydroxide is added to 50 mL of 0.2 M acetic acid ...

    Text Solution

    |

  5. K(a) for HA is 4.9 xx 10^(-8). After making the necessary approximatio...

    Text Solution

    |

  6. A solution contains a mixture of Ag^(+)(0.10M) and Hg(2)^(2+)(0.10M) w...

    Text Solution

    |

  7. The concentration of hydrogen ions in a 0.2M solution of formic acid i...

    Text Solution

    |

  8. The solubility of Mg( OH)2 in pure water is 9.57 xx 10 ^(-3) g L^(-...

    Text Solution

    |

  9. What is the pH of the solution when 0.20 mol of HCI is added to 1L of ...

    Text Solution

    |

  10. How many moles of HCl will be required to preapare one litre of a buf...

    Text Solution

    |

  11. Freshly prepared aluminium and magnesium hydroxides are stirred vigoro...

    Text Solution

    |

  12. What is the pH of 1M solution of acetic acid. To what volume one litre...

    Text Solution

    |

  13. A 50 mL solution of weak base BOH is titrated with 0.1N HCI solution. ...

    Text Solution

    |

  14. The K(SP) of Ag(2)C(2)O(4) at 25^(@)C is 1.29xx10^(-11)mol^(3)L^(-3). ...

    Text Solution

    |

  15. The solubility product K(sp) of Ca (OH)2 " at " 25^(@) C " is " ...

    Text Solution

    |

  16. The ph of blood stream is maintained by a proper balance of H(2)CO(3) ...

    Text Solution

    |

  17. An aqueous solution of a metal bromode MBr(2) (0.05M) is saturated wit...

    Text Solution

    |

  18. For the reaction Ag(CN)(2)^(ɵ)hArr Ag^(o+)+2CN^(ɵ), the K(c ) at 25^...

    Text Solution

    |

  19. Calculate the pH of an aqueous solution of 1.0M ammonium formate assum...

    Text Solution

    |

  20. What is the pH of a 0.50M aqueous NaCN solution ? (pK(b)of CN^(-)=4.70...

    Text Solution

    |

  21. The ionization constant of overset(o+)(NH(4)) ion in water is 5.6 xx 1...

    Text Solution

    |