Hey,
I'm still a student, so I cannot guarantee that my answer is entirely correct, however, this is what my answer was on a similar question in a matsec paper:
> Since pepsin is an enzyme, which works best in acidic environment, such as the one provided i the stomach, no change/ reaction would be observed, because NaOH is an alkaline solution. Therefore, pepsin would not be able to work in an environment with such great pH difference to its optimum.
I hope that helped somehow although my answer is probably very late :P
Good luck,
Angelina
The blue copper (2) sulfate is undergoing a reversible reaction. When heated, it forms a white solid (copper (2) oxide) and water. When water is added to the white solid, it forms the original blue copper (2) sulfate, releasing heat, indicating an exothermic reaction.
When egg albumin is added to mercury chloride, a white precipitate called mercury albuminate is formed. This reaction occurs because the mercury chloride reacts with proteins in the egg albumin to form a complex compound. Mercury albuminate is insoluble in water and will settle out as a solid.
When sulfuric acid is added to PABA (para-aminobenzoic acid), a white solid known as p-aminobenzoic acid sulfate is formed. This is due to the sulfonation of the amino group on the PABA molecule.
When magnesium oxide is added to water, it will react to form magnesium hydroxide, a salt solution, and release heat. This reaction is exothermic and the magnesium hydroxide formed will be a white solid that will dissolve in water to form the salt solution.
Borax is a solid compound at room temperature. It is a white, crystalline powder that dissolves in water.
After 6 hours, egg white will be partially digested by pepsin, which breaks down proteins into smaller peptides. The hydrochloric acid will continue to provide the acidic environment necessary for pepsin to function optimally. Overall, there will be a decrease in the amount of egg white and changes in its composition due to digestion.
White fume is given out.
99 % of the shell is dissolved.
The blue copper (2) sulfate is undergoing a reversible reaction. When heated, it forms a white solid (copper (2) oxide) and water. When water is added to the white solid, it forms the original blue copper (2) sulfate, releasing heat, indicating an exothermic reaction.
When sulfuric acid is added to a solution of strontium nitrate, a precipitation reaction occurs. Strontium sulfate, which is insoluble in water, is formed. This results in the formation of a white precipitate, as strontium sulfate is a white solid.
The white solid is a precipitate. The bubbles will be a gas. Without knowing which chemicals you are dealing with it's impossible to be more specific.
You would find egg white pepsin in the stomach, as it is an enzyme that helps with protein digestion. Hydrochloric acid is also found in the stomach, where it helps to break down food and kill bacteria.
When egg albumin is added to mercury chloride, a white precipitate called mercury albuminate is formed. This reaction occurs because the mercury chloride reacts with proteins in the egg albumin to form a complex compound. Mercury albuminate is insoluble in water and will settle out as a solid.
it is a chemical change
When sulfuric acid is added to PABA (para-aminobenzoic acid), a white solid known as p-aminobenzoic acid sulfate is formed. This is due to the sulfonation of the amino group on the PABA molecule.
When magnesium oxide is added to water, it will react to form magnesium hydroxide, a salt solution, and release heat. This reaction is exothermic and the magnesium hydroxide formed will be a white solid that will dissolve in water to form the salt solution.
A white precipitate of barium sulphate is formed when sodium sulphate solution is added to barium chloride solution. This is due to the formation of an insoluble salt, barium sulphate, which appears as a white solid in the solution.