Calculate percent recoveries for each component of the mixture
Calculate percent recoveries for each component of the mixture and find out the ratio of each component in the original mixture. Show calculations in your report. Discuss sources of errors
Calculate percent recoveries for each component of the mixture
1) You must have an introduction for the experiment and a purpose or objective at the end of your introduction
2) Summarize the following video. You must be as detailed as possible in order to receive full credit.
3) Calculate percent recoveries for each component of the mixture and find out the ratio of each component in the original mixture. Show calculations in your report.
4) Discuss sources of errors such as low percent recoveries, melting point, etc
Answer the post lab questions.
More Details:
In addition, chemists often encounter lab procedures where some chemical product can be lost. Often these are techniques that involve purification of a product.
One common method that can result in losses is recrystallization, where a chemical is first dissolved in a hot solvent and then precipitated out again by cooling the solution, leaving impurities behind.
Often, some of the desired chemical remains in solution, resulting in a reduced recovery.
You can calculate the percent recovery of such a procedure using the starting and ending weights of the chemical.
Also, weigh the chemical product prior to the purification experiment.
Moreover, ensure the chemical product resulting from your purification procedure is completely free of any residual solvent that might have been used.
Also, weigh the dry product and record the weight.
More so, Remember to remove any extra material, such as filter paper that might have been used to catch the product during purification; alternately, subtract the weight of that material.
For example, you might have performed the purification by recrystallization of a chemical in a school lab and obtained a dry mass of 2.86 grams.