Solubility Of Group II Hydroxides Lab Report
Investigating the solubility of Group II hydroxides
Jiyeon Kim
Aim:
To investigate the solubility of Group II hydroxides (Mg(OH)2, Ca(OH)2, Sr(OH)2, Ba(OH)2)
Research Question:
What is the trend of solubility of Group II hydroxides going down the group as determined through measuring the volume of hydroxides needed to titrate with a known concentration of hydrochloric acid?
Background Information:
Solubility is when a solute forms a homogeneous solution by dissolving in solvent. The solubility of any substance can be affected by the physical and chemical properties of the solute and solvent, temperature, pressure and the pH of the solution. There are many applications using solubility such as ore processing, the use of medicines, and …show more content…
The few weeks of immersing in the hospital environment gave me an opportunity to work closely with the nurses, and through our daily conversations, it is evident the nurses had an insurmountable task whereby constant trouble shooting and abiding with standard protocols are needed to ensure optimum healthcare is offered to the patients. One of the interesting exchange concerns is the use of Intravenous bags as the senior nurses barks down on the junior nurses whenever they got the order or combination of IV bags wrong. The seriousness on their faces drew my attention to the severity of any mistakes. This triggered to further investigate the importance and the impacts of the order or combination of IV bags. The solubility of salts dissolved in IV bags is important in predicting precipitation of drugs or the outcome or mixing drugs in IV fluids. Even in very complex molecules one can look for the appropriate chemical groups, which are those that ionise, confer solubility in aqueous or lipid environments, or lead to breakdown or metabolism. The degree of solubility often varies with pH and a drastic change in the pH of a drug when added to an IV solution suggests an incompatibility or a decrease in …show more content…
The group II hydroxides, especially Mg(OH)2 and Ca(OH)2, start to crystallize.
The Group II hydroxides start to crystallize when left still and this might be due to the temperature of the environment where the stock solutions were made was higher than the laboratory, which decreases the solubility during the experiment. This might also because the solution was not shaken properly to dissolve the salt.
Carry out the titration experiment in the same room where the stock solution is made so that the temperature stays constant and keep monitoring the temperature of the solutions using thermometer. Use freshly made stock solution when titrating.
Neutralization reaction is an exothermic reaction.
As the heat is released during the reaction with HCl and NaOH, the excess crystals in saturated Group II hydroxide solutions will further redissolve it in a conical flask. This would affect titration results and thus the concentration and solubility of Group II hydroxides would differ from the original
Jiyeon Kim
Aim:
To investigate the solubility of Group II hydroxides (Mg(OH)2, Ca(OH)2, Sr(OH)2, Ba(OH)2)
Research Question:
What is the trend of solubility of Group II hydroxides going down the group as determined through measuring the volume of hydroxides needed to titrate with a known concentration of hydrochloric acid?
Background Information:
Solubility is when a solute forms a homogeneous solution by dissolving in solvent. The solubility of any substance can be affected by the physical and chemical properties of the solute and solvent, temperature, pressure and the pH of the solution. There are many applications using solubility such as ore processing, the use of medicines, and …show more content…
The few weeks of immersing in the hospital environment gave me an opportunity to work closely with the nurses, and through our daily conversations, it is evident the nurses had an insurmountable task whereby constant trouble shooting and abiding with standard protocols are needed to ensure optimum healthcare is offered to the patients. One of the interesting exchange concerns is the use of Intravenous bags as the senior nurses barks down on the junior nurses whenever they got the order or combination of IV bags wrong. The seriousness on their faces drew my attention to the severity of any mistakes. This triggered to further investigate the importance and the impacts of the order or combination of IV bags. The solubility of salts dissolved in IV bags is important in predicting precipitation of drugs or the outcome or mixing drugs in IV fluids. Even in very complex molecules one can look for the appropriate chemical groups, which are those that ionise, confer solubility in aqueous or lipid environments, or lead to breakdown or metabolism. The degree of solubility often varies with pH and a drastic change in the pH of a drug when added to an IV solution suggests an incompatibility or a decrease in …show more content…
The group II hydroxides, especially Mg(OH)2 and Ca(OH)2, start to crystallize.
The Group II hydroxides start to crystallize when left still and this might be due to the temperature of the environment where the stock solutions were made was higher than the laboratory, which decreases the solubility during the experiment. This might also because the solution was not shaken properly to dissolve the salt.
Carry out the titration experiment in the same room where the stock solution is made so that the temperature stays constant and keep monitoring the temperature of the solutions using thermometer. Use freshly made stock solution when titrating.
Neutralization reaction is an exothermic reaction.
As the heat is released during the reaction with HCl and NaOH, the excess crystals in saturated Group II hydroxide solutions will further redissolve it in a conical flask. This would affect titration results and thus the concentration and solubility of Group II hydroxides would differ from the original