solution 6. Stir for 20 min 7. Add to an ice bath until crystallization occurs 8. Filter the crude product 9. Recrystallize with 2 mL of EtOH 10. Filter pure product and collect MP and mass 11. Perform a saturation test with a bromine and potassium permanganate solution 12. Obtain NMR from instructor and identify peaks Apparatus: Post Lab: Observations:
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up of particles like sand. Activity ______________ 1.2 • Take 2-3 crystals of potassium permanganate and dissolve them in 100 mL of water. Take out approximately 10 mL of this solution and put it into 90 mL of clear water. • Take out 10 mL of this solution and put it into another 90 mL of clear water. • Keep diluting the solution like this 5 to 8 times. • Is the water still coloured? In Potassium permanganate (KMnO4) we can conclude there must be millions of tiny particles in just one crystal
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Laboratory Report 1 Title : Accurate Measurement of Mass and Volume Part A: The Formula of Hydrated Copper (II) Sulfate Aim: The objective of this experiment is to find out the accurate mass of a solid and to calculate the moles of an unknown. Materials: The materials used in this experiment are Hydrated Copper (II) Sulfate‚ weighing bottle‚ analytical balance‚ laboratory balance‚ casserole‚ spatula‚ and hotplate. Methods: First‚ approximate 1.0g of hydrated copper (II) sulfate was
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Surgical Wound Care Types of Wounds * According to how they are acquired * Abrasion‚ laceration‚ cut/incision‚ trauma * According to the degree of wound contamination * Dependent for how the is the wound‚ if there is any antibiotic‚ other treatments * According to depth * Dermis‚ epidermis‚ subcutaneous‚ muscle Purpose * Promote wound healing * To promote optimal condition Factors affecting wound healing * Developmental considerations * Nutrition
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Formation of an Alkene by Alcohol Dehydration Lab Report Balanced Chemical Equation for the Main Reaction Mechanism The acid-catalyzed dehydration of secondary and tertiary alcohols involves non-isolable carbocation intermediaries. In the first step of the of the reaction mechanism below‚ a phosphoric acid catalyst adds a proton to the oxygen atom of the alcohol to form an oxonium ion. The OH is converted to a better leaving group as the positive charge on the oxygen weakens the carbon-oxygen
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Hydrosulfuric acid formula | H2SO4 | 18 | Nitrous acid formula | HNO2 | 19 | Potassium phosphate formula | KH2PO4 | 20 | Silver nitrate formula | AgNO3 | 21 | Sodium carbonate formula | Na2CO3 | 22 | Sodium chloride formula | NaCl | 23 | Aaluminum hydroxide formula | Al(OH)3 | 24 | Magnesium hydroxide formula | Mg(OH)3 | 25 | Methane formula | CH4 | 26 | Nitrogen monoxide formula | NO | 27 | Potassium hydroxide formula | KOH | 28 | Sodium nitrate formula | NaNO3 | 29 | Sulfurous
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variables in this experiment were the volume‚ 250 mL of water‚ and the time‚ 40 minutes‚ checking every 10 minutes. This experiment was performed to determine the optimal conditions for when osmosis and diffusion occur. Hypothesis: Part A: The potassium permanganate will diffusion more evenly in hot water compared to the cold water because water molecules move faster when they are hotter. Part B: The “sausage” with the greatest change because of osmosis will be tube C which is undiluted corn syrup in
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Mixing and Mass Energy Balance CHEM08004: Chemical Analysis and Evaluation 3/26/2014 Mass balance‚ Mixing‚ Absorbance‚ Temperature‚ Weight‚ Product Absorbance‚ Equilibrium‚ Acid‚ Alkali‚ Salt‚ pH‚ Total moles‚ Concentration‚ Potassium Permanganate‚ Ethanoic acid‚ Sodium Hydroxide‚ Sodium Chloride Introduction Mass Balance By the use of mass balances scientists can: Calculate the amounts of raw materials needed for a process‚ estimate the quantity of product that can be made
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several reagents can be used: • The Jones reagent (CrO3/H+‚ Cr2O72-/H+‚ H2CrO4)‚ • Potassium permanganate (KMnO4/-OH or H+)‚ • Collins reagent (CrO2/Pyridine “PCC” (no water present) Secondary alcohols use the same reagents as primary alcohols. Tertiary alcohols are resistant to oxidation. For the aldehydes‚ the Tollins reagent (Ag(NH3)2 is used in addition to the potassium permanganate and the Jones reagent. Scheme: Reagent Table and Instruments Common Name Molecular
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chemical reactions used for their preparation are oxidations. In this experiment‚ an aromatic carboxylic acids namely benzoic acid will be prepared by oxidizing benzyl alcohol which is a primary alcohol. The oxidizing agent used is alkaline potassium permanganate (VII). Benzyl alcohol is an aromatic alcohol with the formula C6H5CH2OH. It is a primary alcohol because the carbon atom which the hydroxyl group‚-OH group is connected joins to one alkyl group and two hydrogen atoms.
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