Mixture & Solids

Fawn Lovell February 25, 2013 Lab2 Separation of Mixture of Solids declare oneself The purpose of this lab was to understand the tints involved in insularity of multiple solids and how to proceed in the insularism of iron filings, vertebral column, slacken salt and benzoic acid. DATA SEPERATION OF MIXTURE OF SOLIDS DATA TABLE GRAMS PERCENT OF physical IRON FILINGS 1. SAND 1. 5 TABLE SALT UNKNOWN laboratory WAS COMPROMISED **** UNKNOWN LAB WAS COMPROMISED*** BENZOIC ACID . TOTAL 3. 3 rack up for the above ready(prenominal) count ****while mixture of water and delay salt were evaporating in the cupboard in-law casualtyly spilt appear of container it was in so test amount was never able to be done*** OBSERVATIONS The separation of material for the iron filings were to get out of the mixture even though a few passes had to be done to make trustworthy whole of them were out.The examine to extract the sand, table salt and benzoic was slightly knotty of a process and with only one test material available the lab was not able to done correctly. The process to get the sand and the Benzoic acid was easily accomplished but even quadruplet days of evaporation time to get the distilled water to evaporate to the grams of table salt would be available there had been no evaporation and consequently the experimental incident with the spillage of the salt/distilled water . CALCULATIONSUnable to complete due to percentage of table salt not found due to accidental spilling of distilled water and table salt left in cup to make appropriate percentages between whole substances. CONCLUSION/DISCUSSION The experiment to arise how to extract multiple materials out of one sample was a prospicient and difficult process to this researcher. The flow chart was helpful in sense the steps but when the experiment was conducted it was not as simple. There were mess of iron filings and with the strength of the magnet provided took multiple passes to retrieve all of them out of the mixture.The benzoic acid crystals in the cold bath went better than pass judgment and was the researcher was surprised how many crystals were obtained out of the original mixture. The sullenest was to obtain the salt grams and percentage, the evaporation time was to short and with the invalidation due to an experimental accident was never obtained and the experiment was never completed correctly. What the researcher has learned from this experiment is to better allocate time, understanding evaporation time and to make sure experiments that need to take time to complete are stored in a better location.QUESTIONS A. How did your procedures or flow charts at the beginning of this experiment correspond to the actual procedures of this lab exercise? The procedural flow chart that was knowing to extract all the mixture followed the lab experiment, however possibly a slightly bigger magnet could fork out been used for the iron filings, they were hard to extract all of them and also the procedure to obtain the salt office have been designed better so days would not have been involved since the experiment had a time limit and evaporation stern take weeks.B. Discuss potential advantages or disadvantages of your proposed procedure compared to the one really used. The advantage of using a flow chart procedure is to press out how you are going to conduct the experiment so other researchers sens follow the same steps as the previous researcher so if experimental errors occur the researcher can go back to what step might have been done incorrectly. C. How would you explain a sand convalescence percentage that is higher than the original sand percentage?The sand recuperation percentage that is higher from the original sand percentage might be from not letting it dehydrate all the way and could still restrain the potential of water molecules in it. D. What were potential source of error in this experiment? The potential sources of er ror could possibly be from not extracting all the mixture out of the sample, evaporation of the distilled water and as in this researchers skid having the material being accidently spilled.