1. Why must the polymerization step have a basic solution? (Consider how it would affect your yield). The polymerization solution must be basic so that the diamine is not protonated and is nucleophilic. The amine must be able to add to the carboxylic acid and form the amide bond.
Why is the organic layer washed with a saturated NaCl solution (brine)? It draws out water dissolved in the organic layer. How much magnesium sulfate is needed to dry? Just enough that some of the solid magnesium sulfate remains free flowing when the solution is swirled and does not clump.
carbon dioxide gasAs the carbon dioxide gas fills the balloon, the balloon inflates.
Since HCl is a by-product of this reaction, we use a diamine solution prepared in an equimolar equivalent of aqueous NaOH. The NaOH reacts with the HCl to form salt and water. This prevents the HCl from causing side reactions, such as the possible addition of HCl to a C=C if one is present in the molecule.
Saturated sodium chloride serves two functions in an extraction procedure. It pulls water from the organic layer to dry it, and it also helps force the organic compound into the organic layer.
6) Finish with a brine (saturated NaCl solution) wash. This helps disrupt any emulsions and will "dry" the organic layer by extracting water that may have dissolved in the organic phase.
Warm air is less dense than cold. Since warm air takes up more space than the same amount of cold air it makes the balloon inflate.
Answer: As air molecules fly around inside the bottle they bump into each other, as well as the inside surface of the bottle. All this bumping creates a pushing force that we call air pressure. This is what makes a balloon inflate when you blow air into it.....Oct 7, 2020
As the air escapes from the balloon, it exerts a force on the ground and the air outside of the balloon. According to Newton's Third Law of Motion, as the gas is released from the balloon and pushes against the outside air, the outside air pushes back. As a result, the rocket is propelled forward by the opposing force.
If the NaOH is not present, how could you push the reaction to completion? If NaOH is not present, the reaction requires an excess of diamine for complete polymerization.
Hexamethylenediamine is the limiting reactant. 3. Calculate the theoretical yield in grams.
Thus nylon 6-10 is formed by the reaction of hexamethylenediamine and sebacic acid. In this demonstration the acid chloride, sebacyl (or Sebacoyl) chloride, is used instead of sebacic acid.
why is adipoyl chloride better for nylon 6,6 synthesis than using adipic acide
The acid chloride reacts much more quickly with an amine to form an amide bond than the plain acid. Actually, you need to activate the acid group to get it to form an amide at all. One wa view the full answer