How do you choose an indicator in acid base titration?

When selecting an indicator for acid-base titrations, choose an indicator whose pH range falls within the pH change of the reaction. For example, in the titration of a strong acid with a strong base, the pH quickly changes from 3 to 11.

What are the two criteria for an indicator to be used in a titration?

The indicator must show a sharp colour change near the equivalence point of titration point.

Where is the midpoint on a titration curve?

Locating the midpoint on a titration curve. The midpoint is reached when enough titrant has been released to allow half the analyte to be neutralized. On the curve, that point is roughly the midpoint between the starting point and the equivalence point, or where the curve levels out.

How do indicators distinguish acids from bases?

Indicators are substances which help us distinguish between acids and bases. Typically, this is achieved by a change of colour corresponding to a change in the pH of the substance. Good indicators undergo a sharp color change at a particular pH value, which helps us determine the pH of the uknown solution.

What is an indicator in titration?

Indicator: A substance that changes color in response to a chemical change. An acid–base indicator (e.g., phenolphthalein) changes color depending on the pH. Redox indicators are also used. A drop of indicator solution is added to the titration at the beginning; the endpoint has been reached when the color changes.

Which criteria should be considered to choose a suitable indicator?

The indicator should have a broad pH range. The indicator should have neutral point at pH=7. The indicator must show a sharp colour changes near the equivalence point of titration point.

What criteria you would use to choose an indicator?

5 Factors to Consider When Choosing an Indicator

• Design Space and the Constraints of Your Panel and Device. The footprint of the panel and the overall size of the device have huge implications for how much room you’ll have to work with.
• Working Conditions.
• Visual Vocabulary and HMI.
• Lighting Technology.
• Budget and Timing.

Which indicator is used for weak acid strong base?

Thymolphthalein is used as an indicator for weak acid and strong base. The end point is color change to blue.

What indicator is such indicator which can determine the strength of solution?

From the above discussion, we can say that Phenolphthalein is used to find the strength of caustic soda solution with the help of oxalic acid. Therefore, the correct answer is (B)- Phenolphthalein.

What does the midpoint of an acid base titration represent?

The pH at the midpoint of the titration of a weak acid is equal to the [Math Processing Error] p K a of the weak acid.

What are indicators in titration?