Agar Lab
Problem
What effect does the different concentration of hydrochloric acid have to the rate of diffusion of agar that is dissolved with sodium carbonate and phenolphthalein?
Introduction
Diffusion is a process where the molecules intermingle as a result of their kinetic energy of random motion and is the net movement of like molecules down their concentration gradient, which is the energy inherent in their constant molecular motion makes them collide and careen outward from the region of higher to lower concentration.
In our daily lives, many tasks are accomplished with the help of diffusion. For example, farting is considered to be diffusion, releasing a very high concentrated intestinal gas through the anus and out to the environment where there is a low concentration. By releasing that harmful gas, it can keep your body healthy.
Agar is a phycocolloid and is extracted from several species of red-purple marine algae’s cell walls that are usually harvested in eastern Asia and California. Laboratory agar looks gelatinous because it is dissolved in boiling water and cooled. Agar can be easily distinguished from the other materials commonly found in a laboratory due to its distinctive smell. At room temperature, agar is a gel and it stays firm at 65ºC and melts at 85ºC. It solidifies when the temperature reaches 32 – 40ºC. It is used as various microoragnisms’ culture medium, especially for bacteria and it is also served as a thickening for soups and sauces, in jellies and ice cream, in cosmetics, for clarifying beverages, and for sizing fabrics. Agar is also used in medicines to promote peristalsis and relieve constipation and is resistant to a breakdown by bacterial enzymes.
Sodium carbonate, Na2CO3, also known as washing soda or soda ash, is a sodium salt of carbonic acid. It can be extracted from the ashes of many plants and has a cooling alkaline taste. It is one of the most basic industrial chemicals. The acid’s Ph scale is always lower than 7.
What effect does the different concentration of hydrochloric acid have to the rate of diffusion of agar that is dissolved with sodium carbonate and phenolphthalein?
Introduction
Diffusion is a process where the molecules intermingle as a result of their kinetic energy of random motion and is the net movement of like molecules down their concentration gradient, which is the energy inherent in their constant molecular motion makes them collide and careen outward from the region of higher to lower concentration.
In our daily lives, many tasks are accomplished with the help of diffusion. For example, farting is considered to be diffusion, releasing a very high concentrated intestinal gas through the anus and out to the environment where there is a low concentration. By releasing that harmful gas, it can keep your body healthy.
Agar is a phycocolloid and is extracted from several species of red-purple marine algae’s cell walls that are usually harvested in eastern Asia and California. Laboratory agar looks gelatinous because it is dissolved in boiling water and cooled. Agar can be easily distinguished from the other materials commonly found in a laboratory due to its distinctive smell. At room temperature, agar is a gel and it stays firm at 65ºC and melts at 85ºC. It solidifies when the temperature reaches 32 – 40ºC. It is used as various microoragnisms’ culture medium, especially for bacteria and it is also served as a thickening for soups and sauces, in jellies and ice cream, in cosmetics, for clarifying beverages, and for sizing fabrics. Agar is also used in medicines to promote peristalsis and relieve constipation and is resistant to a breakdown by bacterial enzymes.
Sodium carbonate, Na2CO3, also known as washing soda or soda ash, is a sodium salt of carbonic acid. It can be extracted from the ashes of many plants and has a cooling alkaline taste. It is one of the most basic industrial chemicals. The acid’s Ph scale is always lower than 7.