Strontium Iodate Monohydrate, Lab Report Example

Purpose

The purpose of the experiment is to explore the synthesis of Strontium iodate monohydrate. In other words, the use of the research is to examine the combination of strontium iodate monohydrate from a specific reaction of strontium nitrate and a solution of potassium iodate.

Introduction

In every day, various chemicals are manufactured in pharmaceutical plants. In most cases, these chemical compounds are made up of more than two elements. For instance, Ammonia is a chemical compound that’s manufactured by mixing nitrogen and hydrogen gas. Other chemicals such as limestone are produced from the lime.  Aspirin, on the other hand, is synthesized from acetic acid and anhydride.  Thus, the process of synthesis is beneficial in all pharmaceutical industries. I am through this process that different drugs are made and used in treating various pathologies.  In the experiment, Strontium monohydrate will be syntheses. The other objective of the research is to obtain as much strontium iodate as possible.

One aspect that is common among industrial chemists is that they are concerned about increasing the amount of the product obtained from an experiment.  Although there are different chemical reagents that are utilized in an experiment, the calculations of the ratios are generally the same.  In such reactions, solubility tests are very important. The aspect is linked to the fact that if one of the products that are formed is formed is insoluble; it will separate as a solid and settle at the bottom of the container. The solid that settles at the bottom of the container is known as the precipitate. The solution that is formed above the precipitate is known as the supernatant liquid. It is worth noting the supernatant contain part of the solid formed. Thus, the process of filtration is critical in increasing the product produced in such an experiment. Also, the solid formed may contain some impurities. Thus it is critical to wash the product with cold water. However, the solid may dissolve in water during washing; the use of ice-cold water in washing is critical in preventing the solid from dissolving. Though the use of the mole concept, it is thus possible to determine the amount of product that is used in both cases.

Most of these chemical reactions require two or more reactants. In such a response, one of the reagents is used before the other. At this time, the result stops.  The chemical or the reagent that is used up is called the limiting reagent. The aspect is linked to the fact that the reaction can`t proceed with one response. The other chemical that is present is in excess. If both reactants are similar in terms in terms of quantity, the reactions go to completion and the two products end. In this case, none of the chemicals is in excess.  The reactants are said to be in stoichiometric ratio to each other.

The Stoichiometric ratio is the mole ration of the two reactants. For instance, in the above experiment 1 mole of strontium nitrate reacts with 2 moles of potassium iodide to form one mole of Strontium iodate and two moles of potassium nitrate.

Balanced Chemical Reaction

Sr (NO3)2 + 2KIO3 —-> Sr (IO3)2 + 2KNO

The matter that results in the experiment is a nitrate. As per the mole concept, the number of moles in each case = mass/ molar mass. With the knowledge of the starting amount of Sr (NO3)2 and KIO3 used, it was possible the figure out the amount of product formed.

Data

Data Treatment

As per the mole concept, the number of moles is given by the molar mass divided by mass

Number of moles = mass/ molar mass

The volume of Sr (NO3)2 solutions used: 38.00 mL (1st run), 40.00 ml (2nd run)

Molarity of Sr (NO3)2 solutions used: 5.00 x 10-2 M

The volume of KIO3 solution used: 49.98 mL (1st run), 49.50 mL (2nd run)

Molarity of KIO3 solution used: 1.00 x 10-1 M

Mass of product, watch glass and filter paper: 32.04 g (1st run), 27.32 g (2nd run)

Mass of watch glass and filter paper: 31.33 g (1st run), 26.47 g (2nd run)

Number of moles of Sr (NO3)2 used: 0.020 moles

Number of moles of KIO3 used: 0.00500 moles (1st run), 0.00495 moles (2nd run)

Limiting reagent: Sr (NO3)2

Theoretical yield of product, moles: 0.00200 moles (1st run), 0.00201 moles (2nd run)

Theoretical return of a product, g: 0.875 g (1st run), 0.880 g (2nd run)

Percent yield: 78. % (1st run), 93. % (2nd run)

Mean percent yield: 86. %

Discussion

The results obtained were relatively close to what should be done. A low yield of about 86% is what should be done. In the experiment, the percentage of yield expected is 100 %.  However, due to errors, some products were not obtained. In case of repetition of the same experiment, the reactants should be allowed to react to completion for the research to yield the highest product. It is worth noting that keeping the container that is collecting the product in a cooler place would increase the amount precipitate.

Consideration to increase the Output

One, during the experiment, the filter paper should be moistened in cold water to form a seal on the filter funnel. The aspect allows maximum sedimentation hence higher yield. All the precipitate should be transferred from the beaker to the funnel. The issue increases the precipitate amount, therefore, a more top product. Also, in case of gravity filtration, the corner of the folded filter paper is torn off.  Also, a tighter seal is made between the edges of the funnel to facilitate the process of filtration. Also, it is worth considering the supernatant level or the wash water in the funnel. It is recommended that the wash water should be higher than the top of the piece of the paper. It is worth using ice-cold water to transfer the washing water of the product.  The water temperature of this wash water is critical in this sense that it increases the solubility of the Strontium iodate.  Thus, the aspect of using ice-cold water is crucial in the sense that it reduces the risk of losing the product due to solubility. In other words, Strontium iodate tends to dissolve faster in water. In cold water, the rate of solubility is low; hence a maximum yield of the product.

Conclusion

In a nutshell, when two or more products are allowed to react, they form a product. In most cases, one product precipitates the other. In this experiment, Sr (NO3)2 reacts with KIO3 to form Sr (IO3) and KNO. Sr (IO3) is insoluble in water. Since all nitrates are soluble, the precipitate formed is Strontium iodate. In this experiment, Strontium iodate tends to dissolve faster in water. In cold water, the rate of solubility is low. Thus, the precipitate should be washed in cold water. It is worth noting that the other processes that are critical in the experimentation is filtration and decantation. The process of filtration ensures that the entire solid that is formed doesn’t remain in the supernant. In other both words, if the precipitate formed remains in the supernant liquid, the yield of the experiment will increasingly reduce. The process of decantation is also critical in increasing.