Lab 2: Separation of Mixtures and Solids Purpose: The purpose of this lab is to become familiar with the separations of mixtures and solids. Pre-lab predictions: Data: Data Table 1: Experiment Data | | Grams | Percentage of Mixture | Iron Filings | 2.0g | 26.67% | Sand | 1.6g | 21.33% | Table Salt | 2.4g | 32.00% | Benzoic Acid | 1.2g | 16.00% | Total | 7.5g | 96% | Observations: While the water was boiling with the three solids (salt, benzoic acid, and sand) the water got very thick when trying to dissolve the benzoic acid, making it harder to pour out all the non-sand particles. Getting everything separated was much harder to do than expected because things like salt like to stick to the bottom of cups. …show more content…
Proceeding through the entire process helped me to experience and see the properties of the acid and salt and be able to separate them out. B. Discuss potential advantages or disadvantages of your proposed procedure compared to the ones actually used? Well, if I used my own, I would still be unable to separate the two. I would have probably separated them from the sand and kept boiling in hopes that something would happen to separate the salt and acid, yet nothing would, and I would be back to where I started. There would be zero advantage doing an experiment my way. C. How would you explain a sand recovery percentage that is higher than the original sand percentage? As the procedure mentioned, a little extra water would need to be added in order to remove all acid and salt from the sand, but the certainty that the acid and salt were completely separated, all particles, cannot be confirmed for absolute sure. Also, there might be miscalculations between the dish and the sand and an error somewhere in there or maybe the water wasn’t completely out of all the sand, and that caused the issues. D. What were potential sources of error in this experiment? As mentioned in the answer to question C, the particles completely separating (the sand from the salt and acid, the acid from the salt) without catching some residual particles from the
D.a poorly sorted mix of gravel and sand. Answer Key: C Feedback: The correct answer is C. a moderately sorted mix of sand and silt. Question 2 of 33 3.03/ 3.0303 Points Bag B contains Correct A.well-sorted sand. B.clay. C.a poorly sorted mix of sand and silt D.a poorly sorted mix of gravel and sand.
Every individual is different in a specific way. Like people, substances have unique qualities, such as properties, which aid chemists to differentiate and identify the particular components the substances consists of. These particular qualities are identified as either physical or chemical properties. Physical properties are properties which do not require a chemical change of its composition in order for the substance to be classified. A few examples of physical properties include color, density, odor, boiling point, melting
The purpose of this lab was to determine the limiting reactant in a mixture of to soluble salts and the percent composition of each substance in a salt mixture.
Experiment 55 consists of devising a separation and purification scheme for a three component mixture. The overall objective is to isolate in pure form two of the three compounds. This was done using extraction, solubility, crystallization and vacuum filtration. The experiment was carried out two times, both of which were successful.
The purpose of this lab is to test substances and to determine the physical and chemical properties of substances.
Me and my lab partner, obtained a mixture of a un known proportion from the instructor and then flow the guide line in our lab manual to separate the mixture by applying the separation method motioned in our lab manual pages 33-40 . In this experiment, the separation methods were decantation,
There are millions of different organic compounds. Most of them are found in mixtures and in order to achieve a pure form they need to be separated, isolated, and purified. However, there are endless numbers of possible mixtures, which make it impossible to have a pre-designed procedure for every mixture. So chemists often have to make their own procedures. The purpose of this experiment was to prepare the student to the real world by them designing their own procedure which will help them understand the techniques of separation and purification better. The goal was to extract two of the components of the
The objective of this extraction experiment was to achieve a comprehensive understanding, as well as master the practice, of the technique of separating various individual components of a compound.
b. Similarly, for the redistillation of Fraction 3, predict how the gas chromatogram for the final fraction would have differed from the gas chromatogram of Fraction 3 from Distillation 1.
This experiment was done in order to understand both fractional distillations and gas chromatography. In addition, this experiment was done to separate and identify two liquids that made up an unknown mixture. Gas chromatography was used to figure out the ratio of these two liquids.
The use of different syringes for the extraction of the Potassium chloride and distilled water solution from each beaker avoids the possibility of contamination in the case where the same syringe was used in all 6 beakers.
The purpose of this experiment is to familiarize oneself with the general procedures determining a partition coefficient at the microscale level and learn in weighing milligram quantities of materials on an electronic balance, the use of automatic pipets, the use of transfer pipet, and the use of a vortex mixer. Also, to familiarize oneself with extraction
3. Q-Thinking about what you learned in the lab and doing some additional research, if you mixed fresh and salt water together in the marine environment, how would the water “layer”? Where would the freshwater be and why?
The purpose of this experiment was to separate a two component mixture using fractional distillation. Distillation is a process of vaporization than condensation of a substance, used primarily to separate substances from a mixture when there are different boiling points. Fractional distillation is when the mixture has multiple substances with similar boiling points, and a fractional column is used to create multiple vaporization/condensation cycles. Fractional distillation is important when two or more substances need to be separated, but they have similar boiling points.
3. McMurry, John C., Robert C. Fay, and Stephanie Dillon. Experiment 3: Separation of the components of a mixture. Chemistry: Laboratory Manual. 6th ed. Boston: Prentice Hall, 2012. 33-42.