Practical questions about solubility
Not what you're looking for?
1. Some starch/carbohydrates, although soluble in warm water, become gel like once experincing a cold atmosphere. The commercial dessert, Jell-O, is composed of just this type of starch. Making the dessert Jell-O requires bringing to a boli a certain amount of water before adding in the powdered Jell-O crystals. Then, as soon as the liquid is boiling, cold water is added to the Jell-O solution and the put into the refrigerator. Please could to explain for me what might happen if use only cold/room temperature water to make Jell-O.
2. Why powdered ice tea would dissolve in hot water better than in cold water?
Purchase this Solution
Solution Summary
The two questions asked are answered in the solution provided. The solution for each question provides details concerning the properties of compounds dissolving into a solution. As well, the solution discusses how temperature affects the rate of solubilization.
Solution Preview
1. Starch is a polysaccharide (meaning "many sugars") made up of glucose units linked together to form long chains. There are two types of starch molecules amylose and amylopectin. Amylose averages 20 to 30 percent of the total amount of starch in most native starches. There are some starches, such as waxy cornstarch, which contain only amylopectin. Others may only contain amylose. Glucose residues united by a 1,4 linkage form the linear chain molecule of amylose. Amylose is the linear fraction and amylopectin is the branched fraction.
Amylose molecules contribute to gel formation. This is because the ...
Purchase this Solution
Free BrainMass Quizzes
Thermochemistry
The quiz helps in revising basic concepts about thermochemistry.
Functional groups in Organic Chemistry
You will be tested on the names of functional groups in Organic Chemistry. It is very important to know the functional groups to understand Organic reactions.
Match Elements with their Symbols
Elements are provided: choose the matching one- or two-letter symbol for each element.
Organic Chemistry Naming: Alkanes
This is a quiz which is designed to assist students with learning the nomenclature used to identify organic compounds. This quiz focuses on the organic compounds called Alkanes.