Table of Contents
Preparation of Aniline Yellow – Practical Experiment:
Aniline Yellow is an organic compound that is used as a dye. It is a yellow solid that is soluble in water. The preparation of aniline yellow involves the reaction of aniline with sulfuric acid.
The experiment begins by weighing out 0.5 grams of aniline. The aniline is then placed in a conical flask, and 10 milliliters of sulfuric acid are added. The flask is then placed on a hotplate, and the mixture is heated until it begins to boil. The mixture is then boiled for 15 minutes. After boiling for 15 minutes, the mixture is allowed to cool. The aniline yellow is then isolated by filtration.
Apparatus Required
To perform a titration, you will need a volumetric flask, a burette, a pipette, and a stirring rod.
Theory
This experiment’s objective was to synthesize aniline yellow from aniline and benzoic acid. The first step was to dissolve aniline and benzoic acid in ethanol. Next, NaOH was added to the solution to form a benzoate anion and protons. The benzoate anion then reacted with the aniline to form aniline hydrochloride and benzoic acid. The aniline hydrochloride then reacted with the ethanol to form aniline yellow.
The first step of the experiment was to dissolve aniline and benzoic acid in ethanol. Aniline is a colorless, oily liquid, and benzoic acid is a white crystalline solid. When they were dissolved in ethanol, they formed a yellow solution.
The next step was to add NaOH to the solution. NaOH is a strong base, and it reacts with the benzoate anion to form benzoate ions and protons. The benzoate ion then reacted with the aniline to form aniline hydrochloride and benzoic acid.
The aniline hydrochloride then reacted with the ethanol to form aniline yellow. Aniline yellow is a yellow crystalline solid. It is insoluble in water but soluble in ethanol.
The results of this experiment showed that aniline and benzoic acid could be used to form aniline yellow. Aniline yellow is a yellow crystalline solid that is insoluble in water but soluble in ethanol.
NCERT Solutions for Class 12 Chemistry
NCERT Solutions for Class 11 Chemistry
The Chemical Reaction Involved
in the Formation of a Salt
When an acid and a base react, salt and water are produced. The chemical reaction is written as:
HA + BOH –> H2O + NaCl
HA is the acid in this reaction, BOH is the base, and NaCl is the salt. The acid and base react to form water and salt.
Procedure
- Preheat the oven to 375 degrees F.
- Add 1 tablespoon olive oil to a large baking dish and place in the oven to heat.
- Cut butternut squash in half and remove seeds.
- Cut butternut squash into thin slices and add to the baking dish.
- Add 1/2 teaspoon salt and 1/4 teaspoon black pepper to the baking dish.
- Bake for 25 minutes.
- Remove from oven and add 1/4 cup chopped parsley.
- Serve.
Setup
- Add the following dependency to your project: compile ‘com.android.support:support-v4:27.1.1’
- Add the following XML to your layout: </FrameLayout
“The Myth of the Rational Voter”
In his book, “The Myth of the Rational Voter,” Bryan Caplan argues that people are not rational about voting. He claims that people are swayed by their emotions and biases, which leads them to make irrational decisions.
Precautions
No specific precautions are known.
Interactions
No specific interactions are known.
Side Effects
No specific side effects are known.
