Throughout this acid, base and buffer lab, this will allow each individual to gain an enhanced sense of knowledge of how these different aqueous solutions work as a buffer system or how they are unable to perform as buffer system mixed with two solutions together. This can be identified through the colour change to measure pH behaviour in several aqueous solutions, therefore the different factors that will cause the change of pH. This will gain understanding of how this relates to the biological studies of biology and to the advantage of humans.
Hydrochloric acid combined with water will not a make good buffer system. Hydrochloric acid is a strong acid that will not coexist with any other base in equilibrium. When hydrochloric acid drops …show more content…
Sodium hydroxide is not a good buffer system. The equation it forms is HCl + H2O → H3O+ + Cl-. HCl is a strong acid where the conjugate base is Cl-. Chlorine is too weak of a base therefore it will not make a buffer since it is too weak to produce one. Sodium hydroxide ions separate which leaves behind an extra OH- ions in the remaining water. The concentration of the solution forms a basic solution however, this lead the pH to increase. As the concentration of OH – ions increases, the concentration of H+ decreases. Buffers only works when a weak acid and it conjugate weak base is combined so it becomes balanced within the each set of solution. The equation it forms is NaOH → OH- + Na+. Water is known to be a control. Distilled water is used as a control because it is purified. Water is deprived of contaminants. It is beneficial for accurate results for an experiment being done therefore, it allows positive controls to tell your positive results of your unknown results would be and negative controls to show you what the negative result of your unknown results would be. Without controls, you will not know what to look for in a positive or negative result. Water controls are very useful in the field of biology and chemistry. (Green, 2010)
Hydrochloric acid combined with water will not a make good buffer system. Hydrochloric acid is a strong acid that will not coexist with any other base in equilibrium. When hydrochloric acid drops …show more content…
Sodium hydroxide is not a good buffer system. The equation it forms is HCl + H2O → H3O+ + Cl-. HCl is a strong acid where the conjugate base is Cl-. Chlorine is too weak of a base therefore it will not make a buffer since it is too weak to produce one. Sodium hydroxide ions separate which leaves behind an extra OH- ions in the remaining water. The concentration of the solution forms a basic solution however, this lead the pH to increase. As the concentration of OH – ions increases, the concentration of H+ decreases. Buffers only works when a weak acid and it conjugate weak base is combined so it becomes balanced within the each set of solution. The equation it forms is NaOH → OH- + Na+. Water is known to be a control. Distilled water is used as a control because it is purified. Water is deprived of contaminants. It is beneficial for accurate results for an experiment being done therefore, it allows positive controls to tell your positive results of your unknown results would be and negative controls to show you what the negative result of your unknown results would be. Without controls, you will not know what to look for in a positive or negative result. Water controls are very useful in the field of biology and chemistry. (Green, 2010)