Acid-Base Titration

Indicator used in Standardization of Sodium Hydroxide

• Methyl Red Solution

• Phenoptheline

• Crytsal Voilet

• None

Which are the requirements used in Standardization of HCL

• THAM - D.W

• Potassium Biphtalate-D.W

• Sodium Carbonate-D.W

When adding base to acid the phenolphthalein indicator changes color from ... to ... at the end of the titration.

• Colorless to Pink

• Pink to Colorless

• Red to Yellow

• Colorless to Yellow

Types of Indicator theories

• Oswarld

• Quinonoid

• Both

• None

Commonly used indicators in Acid-Base Indicator:

• Methyl Red - Phenopthalein

• Methyl Orange-Phenopthalein

• Bromocresol Green - Phenopthalein

• Methyl Red - Bromocresol Green