One of my chemistry assignments my freshman year was to synthesize alum in this lab report, i discussed the process that i used to synthesize alum and analyzed the experiment. Experiment 4: synthesis of alum from scrap aluminum objective: in this experiment, you will be converting the aluminum metal from a beverage can into the chemical compound potassium aluminum sulfate kal(so4)2•12 h2o, commonly referred to as alum introduction it had been a good year for the o' keefe farm with. This experiment was designed to recycle aluminium into alum crystals which have uses in industry the aluminium was converted to alum by these particular research questions will be answered throughout this eei: how the mass of the scrap preparation of alum (nd) retrieved may 11, 2010, from. In this experiment you will investigate a sequence of reactions, beginning with al metal and ending with alum, k2so4•al2(so4)3•24h2o, and identify the reactions involved pre-lab assignment read through the laboratory handout and come up with at least one question whose answer will help you complete this. With the recycling aluminum—synthesis of alum chemistry laboratory kit, students perform a multi-step chemical reaction with aluminum foil students use dissolution, crystallization and filtering crystallization and filtering to produce solid alum students also calculate percent yield and perform a post-lab cost analysis. Quick answer the major sources of error in the synthesis of alum from aluminum foil include loss of product through various means, human and systematic errors, contamination, and impurities in the reactants sources of error depend on the exact method of synthesis continue reading.
Use a descriptive title that explicitly indicates the goal of the experiment your title will include elements of the experiment title in the lab notebook, but it won't be identical ex: 'synthesis of alum from elemental aluminum' center for writing across the curriculum objective/goal 1−2 sentences state the objective ( purpose. Solutions—alum ○ moles lab activity 5: synthesis of an oxide of copper ○ moles lab activity 6: single replacement and percent yield ○ moles lab activity 7: answer key moles lab activity 3: compounds time: students will need about 5–10 minutes at each lab station to do initial calculations and measurements. Synthesis of alum: kal(so4)2•12 h2o hazard warning: the sodium hydroxide used in this experiment is highly corrosive if you get it on your skin, wash immediately if your skin feels slippery, that is a sign that you have gotten the sodium hydroxide on you introduction the purpose of this experiment is to use aluminum.
Calculate the theoretical yield and percent yield of a synthesis reaction discussion alums are ionic in this experiment you will prepare an alum–kal (so4)2 2h2o [potassium aluminum sulfate dodecahydrate]–from scrap show your method in detail the number of significant figures in your answers must be correct. Video 5, experiment 5: preparation of alum: vacuum filtration of a solid clearunt loading unsubscribe from clearunt cancel unsubscribe working subscribesubscribedunsubscribe 33k loading loading working add to. The preparation of alum from scrap aluminium in this experiment, instead of recycling aluminium into new metal cans, a chemical process will be used that transforms scrap aluminium into a useful chemical compound, potassium aluminium sulfate dodecahydrat extracts from this document introduction the preparation of.
Preparation of alum from aluminum metal by: rachel buckley, alexa kirchharr abstract: the purpose of this experiment, preparation of alum from aluminum metal, was to extract alum from aluminum metal, and to find the percent yield of the alum from the aluminum metal the experiment was carried out. Expt 9 alum from scrap aluminum pre-lab lecture video - duration: 17:35 melissa golden 3,276 views 17:35 exp 12 - synthesis: preparation of alum - duration: 6:08 michael janusa 3,469 views 6:08 theoretical, actual, percent yield & error - limiting reagent and excess reactant that remains.
1 experiment 4: synthesis of alum from scrap aluminum objective: in this experiment, you will be converting the aluminum metal from a beverage can into the chemical compound potassium aluminum sulfate explain your answer showing all calculations 5 a) list sources of error that would contribute toward lowering. In this experiment, instead of recycling aluminum into new metal cans, a chemical process will be used that transforms scrap aluminum into a useful chemical compound, potassium aluminum sulfate dodecahydrate, kal(s04)2•12h20, commonly called “alum” alum preparation of potassium aluminum sulfate.
Potassium alum is considered by the fda as a generally recognized as safe ( gras) substance[l1070] it is an inorganic salt, also called potassium aluminum sulfate with a formula of alk(so4)2 that is predominantly produced in the dodecahydrate form (alk(so4)2 12h2o) potassium alum is formed by large, transparent.
What is the precent yield of alum if 04000g of aluminum isused in the synthesis of alum and 48946 grams of alum is actuallycollected at the end of the experiment %kal(so4)212h2o my answer: 8172% sincere appologies i would split these questions into 4different topics or what not but since i'm not a member =t. This is a video i made during my last lab might get used in a lab report, not sure the editing in this video is very basic i just switched from sony movie.
Exp 12 synthesis: preparation of alum alum: potassium aluminum sulfate dodecahydrate kal(so 4 ) 2 12h 2 o 1) 2 al (s) 2 o (l) kal(so 4 ) 2(aq) cooled → kal(so 4 ) 2 12h 2 o (s) goal of experiment: % yield alum = actual yield (exp), g x 100% theo yield (calc), g exp 12 – video (time: 6:08 minutes. Synthesis and analysis of potassium aluminium sulphate (alum) from waste aluminium can au birnin-yauri department of pure and applied chemistry kebbi state university of science and technology aliero, kebbi state nigeria [email protected] musa aliyu department of pure and applied chemistry. It is not a substitute for reading the procedure in the handout before coming to lab the synthesis will be carried out in the following stages: dissolving aluminum foil gravity filtration reactions that complete alum formation crystallization vacuum filtration work in pairs dissolving aluminum foil: 2 al(s) + 2 oh1-(aq) + 6.