When an acid is gradually added to a basic solution containing phenolphthalein, the solution will change from pink to colorless as the neutralization reaction takes place. Another important aspect of acid-base neutralization reactions is the concept of equivalence point. The equivalence point is ...
acid is put into a burette and added to the solution in the conical flask until an end-point is reached.Phenolphthalein is colourless in acidic solution and pink in alkaline solution.What is the colour of the solution in the conical flask(i) before the acid is added(ii) at the end-...
Phenolphthalein is colorless in an acidic solution. In an acidic solution, the benzoid form of phenolphthalein exists. In the benzoid form of...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer your tou...
Understand what acid-base indicators are, how they work to determine if a solution is acidic or basic, and see the examples. Related to this QuestionWhy is phenolphthalein an appropriate indicator for a weak acid-strong base titration? Why is phenolphthalein used in a titration experiment? Why...
In the chemistry laboratory, acid-base reactions are commonly completed through a process called titration. A solution of known concentration is carefully added into one of unknown concentration. An indicator, like phenolphthalein, is added into the unknown concentration. When the solution changes color...
(e)Phenolphthalein is an indicator and is represented by the formul a HIn.Phenolphthalein, HIn, is a weak acid.HInH++ In The K value for phenolphthalein is 5.0 × 10-10moldm-3 at 298 K. This indicator changes colour at a pH of approximately 8.8.[In-]Calculate the ratio n at pH ...
Eriochrome Black Tis a complexometric indicator that is used in complexometric titrations, e.g. in the water hardness determination process. It is an azo dye. What is the use of phenolphthalein? Phenolphthalein is often used asan indicator in acid–base titrations. For this application, it turns...
To obtain phenol from aniline, we can follow a series of chemical reactions involving diazotization and hydrolysis. Here’s a step-by-step breakdown of the process:Step 1: Diazotization 1. React aniline with sodium nitr
To determine the color of the China Rose Indicator when added to an acid, we can follow these steps:1. Understanding China Rose Indicator: - China Rose Indicator is derived from the petals of the China Rose flower. When the
However, as we know, acids turn blue litmus paper red. When you buy red litmus paper, you're really buying blue litmus paper that has been treated with an acid to turn it red. When the red litmus paper comes in contact with an alkaline solution, it returns to its natural blue state....