what happens if i heat a pinch of benzoic acid in a clean, dry test tube for two minutes

Q: Indicate the proper sequence of steps required to prepare a buret for use in this experiment. It may…

A: The steps of the preparation given are,

Q: Which of these pictures show decolorization?

A: Substance appeared coloured due to presence of impurities . Example :brown sugar  Brown sugar with…

Q: Why does the Sudan III reagent form colored droplets with coconut oil?

A: Sudan III reagent is a dye that is capable of dissolving fats/ lipids. It is used to detect the…

Q: What is the melting point of crude and pure acetanilide?

A:

Q: What is the procedure of ethanol distillation from yeast sugar wash?

A: Ethanol is manufactured from molasses by the fermentation process. Fermentation is the process of…

Q: Why do you think there is a need to soak the crucible with 10% nitric acid? Why do you think the…

A: An acid is a substance that can play a role in increasing the hydrogen ion (H+) concentration in an…

Q: What is the purpose of the filter paper moistened with ammoniacal silver nitrate solution in the…

A: The functional groups are the key components associated with a molecule that is highly responsible…

Q: A solution is used as a hemostatic and antiseptic agent? A) Hydrogen peroxide B) Sodium…

A: The solution that acts as homeostatic and antiseptic agent is given below

Q: After removing the aqueous layer from the separatory funnel, how did you remove water from your…

A: By the separatory funnel, one can separate the organic layer and the aqueous layer. During this…

Q: (b) Why is TEL no longer used as an anti-knocking agent?

A: Tetraethyl lead is used as an antiknock agent in gasoline in early 1920's. But now a days it is not…

Q: Why should the spatula used for spooning solid chemicals from a reagent bottle be clean and dry?

A: If it is not clean and dry  ,you will contaminate the reagent. We were always taught to never to put…

Q: how many hydrogen bond acceptors are there in pantoprazole?

A: If we consider any hydrogen bond, there consists a donor and an acceptor part. The donor part is the…

Q: Write an equation that explains what happens if a scientist working in the laboratory spills an…

A: Nylon 6, 6 is a polyamide formed by the condensation reaction of adipic acid (HOOC-CH2- CH2-…

Q: What is the purpose of adding cold alcohol into the banana liquid? What reagent is used in research…

A: The cold alchol added helps to precipitate (DNA undissolves when comes in contact with cold alchol)…

Q: Benzillic Acid Lab Q3. Cold water and ethanol was used to wash/rinse the collected solid during…

A: The rinse is to wash off impurities that adhere to the surface of the tetraphenylcyclopentadienone…

Q: UV-lamp? Group of answer choices acetanilide sodium chloride caffeine acetylsalicylic acid

A: Compounds which can absorb UV light can be seen with UV lamp . Generally organic compounds…

Q: Filter paper should be moisten with water in preparation of spirit

A: False

Q: answer the following questions 1. What is the purpose of flame sterilizing the inoculating loop or…

A:

Q: How does the analyzed vinegar sample conform with the FDA standards?

A: According to the Food and Drug Administration(FDA) standards, the minimum amount of acidity that a…

Q: Briefly describe the precautions you should take when you mix chemicals in a test tube.

A: when we perform experiments in labs precautions is very necessary . 1.use test tube holder in such a…

Q: Tollen's reagent reacts with hexan-2-one to produce hexanoic acid and silver mirror precipitate.…

A: Other name of Tollen’s reagent test is  silver mirror test.Ammonical solution of silver nitrate is…

Q: Explain the resuyof the sulfuric acid test on your product.

A: Product formed is = Triphenylmethanol Treated with = Sulfuric acid

Q: What is the purpose of adding charcoal in toothpaste formulation? Is it approved by American Dental…

A: Ans. Purpose of adding charcoal in toothpaste formulation: Recently, charcoal-containing…

Q: A. Test for Unsaturation To 3 drops of toluene add 3 to 4 drops of 1% potassium permanganate…

A:

Q: What is the purpose of chromic acid test? What is the evidence of positive result?

A:

Q: How do you remove Prussian blue stain?

A: Prussian blue is a dark blue dye that is produced on the oxidation of ferrous ferrocyanide salts.…

Q: what are possible sources of error in a soap making experiment? (non-human error) I want clear…

A: Soap making experiment involves the process of saponification in which the reaction of triglycerides…

Q: Melting point started 54 and stopped 59   did you successfully make benzamide

A: The question is based on the concept of experimental chemistry. we have to predict whether…

Q: Write 3 ways that can be used to get rid of emulsion.

A:

Q: 1. Place 5 mL of starch solution in each of 2 test tubes. 2. Heat the test tubes to boiling and add…

A:

Q: Name the water purified above separating technique

A: WATER PURIFICATION The process of purifying water involves taking out unwanted chemicals, biological…

Q: Why do apple and banana shoe discoloration when acid was applied?

A: Answer - Apples and banana contain an enzyme called polyphenol oxidase or tyrosinase. we  will…

Q: In which of the following tests, copper acetate is used Select one: a. lodine test b. Seliwanoff's…

A: Carbohydrates are also called sugars that impart energy to the body. It comes under the category of…

Q: Which analyte gives a positive result in the Benedict's Test?

A: Benedict's reagent : It is prepared by dissolving CuSO4.5H2O (copper sulphate pentahydrate), Na2CO3…

Q: TRUE OR FALSE _ 1. To dispense chemicals, read the label at least twice before removing any chemical…

A: Hi, Since you have posted multiple questions, we will solve first three for you. If, you want all…

Q: I need help with those

A: Given: Some of reactions are given  To find: Molecularity and rate expression for the given reaction…

Q: Name of Test Sample Reagent Result Sodium bisulfate a. Aldehyde b. Acetone

A: Test used for the detection of carbonyl compounds:

Q: What happen to the glowing wood splint when it is inserted inside the test tube?

A: Given,          Glowing wood splint is inserted into a test tube     Required,…

Q: 1. What are the two reactants used to synthesize the Aspirin? 2.  Why is water added to the…

A: Aspirin is synthesized through the esterification of salicylic acid by the acetic anhydride.The…

Q: How to derive structural information from a ball-andstick model ?

A: Ball and stick model is used to show three dimensional position of  atoms in a molecule.

Q: Is the sodium salt of propanoic acid as effective a soap assodium stearate? Explain.

A: Soaps are defined as salt of fatty acids that are produced by hydrolysis of fatty acids. Soap…

Q: why is there are bubbles formed when aniline is added to nitrous acid?

A: The chemical formula of aniline is C6H5NH2 and that of nitrous acid is HNO2.

Q: What change will you observe if you test soap with litmus paper (red and blue)?

A: Litmus paper is a chemical indicator, which is helpful in identifying the acidic, basic or neutral…

Q: 9. Just prior to drying an organic layer with a drying agent, you notice water droplets in the…

A: If water droplets are present in organic layer, so to remove it from organic layer you have to add…

Q: How does a soap's dirt removal mechanism work? Describe the structure of the soap by drawing.

A: Soaps are the salt of the fatty acids. It contains hydrophobic and hydrophilic part. Hydrophobic…

Q: A group claims that they acquired 6 grams of iodoform from 8 grams of iodine crystals reacted with…

A: Iodine reacts with acetone in the presence of NaOH to form iodoform (CHI3). Iodoform formation is…

Q: What are the prroducts when you mix acetaldehyde, acetone, and sodium hydroxide together?

A:

Micelles and Biological Membrane

Micelles are the type of lipid molecules that organize themselves in spherical shape in aqueous solutions. The production of the micelle is a reply to the amphipathic behavior of fatty acids. It means that they consist of both hydrophobic regions and hydrophilic regions. In micelles, polar head groups (hydrophilic groups) produce an outer layer associated with water whereas nonpolar tails (hydrophobic groups) are organized in the interior.