What is the reaction between phenolphthalein and sodium hydroxide?

Explanation: When the sodium hydroxide, which is a base, is mixed with phenolphthalein, it turns pink. When the base is neutralized by the acid, citric acid, which is present in lemons, the pink solution turns colorless.

What is the chemical formula for phenolphthalein?

C₂₀H₁₄O₄
Phenolphthalein/Formula

What is phenolphthalein write chemical equation for preparation of phenolphthalein?

Phenolphthalein is a chemical compound with the formula C20H14O4 and is often written as “HIn” or “phph” in shorthand notation. Phenolphthalein is often used as an indicator in acid–base titrations….Phenolphthalein.

Is the reaction of phenolphthalein with hydroxide ions Equation 2 first or second order in phenolphthalein?

The purpose of this experiment is to show that both m and n are equal to unity or that the reaction is first order in phenolphthalein and first order in NaOH (OH- ion). In this experiment the solutions will be strongly basic with only a trace of phenolphthalein.

Is the reaction of phenolphthalein with hydroxide ions first or second order in phenolphthalein?

The concentration of OH- ions is very large compared to the concentration of phenolphthalein. Therefore the OH- concentration can be considered as constant and the reaction is a “pseudo” first order.

How do you make phenolphthalein?

Starts here0:53How to make a Phenolphthalein Indicator Solution (0.05\%wt)YouTube

How do you prepare phenolphthalein indicator?

How do you write hydroxide formula?

OH−
Hydroxide/Formula

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Hydroxide is a diatomic anion with chemical formula OH−. It consists of an oxygen and hydrogen atom held together by a single covalent bond, and carries a negative electric charge.

How do you write sodium hydroxide?

Sodium Hydroxide chemical formula is written as NaOH. It is also commonly known as caustic soda or Iye and is widely used in manufacturing a variety of products such as paper, soap and detergents, pulp, explosives, liquid drain and oven cleaners, etc. Sodium Hydroxide is one of the simplest hydroxides.

What is the reaction of phenolphthalein with sodium hydroxide?

The reaction of phenolphthalein reacting with sodium hydroxide consists of C20H14O4+ NaOH → NaKC8H4O4 (aq)+ H2O(l) Phenolphthalein is used as an indicator in this reaction because it changes color when a solution reaches a pH of around eight, or in other words the endpoint of a solution.

What is the structure of phenolphthalein?

The structure of phenolphthalein is as below. When phenolphthalein is reacted with acid or neutral solution or water there is no reaction as phenol present in the structure is acidic in nature i.e. it has tendency to release H+ ions in the solution.

Why does phenolphthalein give pink colour to a neutral solution?

In presence of acid or neutral solution the H+ ion of phenol are not liberated. but when phenolphthalein is treated with a base. the acidic part of phenol reacts with the base to give corresponding sodium salt of phenolphthalein which has pink color thus it imparts pink color to the solution.

Why is phenolphthalein used as an indicator in titration reactions?

C20H14O4+ NaOH → NaKC8H4O4 (aq)+ H2O (l) Phenolphthalein is used as an indicator in this reaction because it changes color when a solution reaches a pH of around eight, or in other words the endpoint of a solution. It also allows us to see a physical change, thus resulting in a more accurate measure of how much was titrated.

https://www.youtube.com/watch?v=Lk23lJP6zII