cylinder 2.- Hydrogen peroxide 3.- Dish detergent 4.-Food coloring 5.-Potassium iodide 6.-Safety Glasses 7.- Lab smock PROCEDURE 1.-Put on your safety glasses and lab smock for your own safety. 2.-Pour the hydrogen peroxide into the graduated cylinder. 3.- Add 5 drops of food coloring to the hydrogen peroxide. 4.-Add the dish detergent to the peroxide in the cylinder. 5.- Then you pour the potassium iodide to the mixture and quicky back off. o you don’t want to be a kid and instead want
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Discussion: In this experiment‚ we alkylate sodium saccharin to N-ethylsaccharin with iodoethane in an aprotic solvent N‚N dimethylformamide. Nucleophiles in this experiment will react better in an aprotic solvent. Aprotic solvents have dipoles due to its polar bonds but they do not have H atoms that can be donated into a H-bond. The anions which are the O- and N- of sodium saccharin are not solvated therefore are “naked” and the reaction is not inhibited and preceded in an accelerated rate.
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Vitamin c Estimation by back(idiometric) titration Mahindra (UWC of India) Chemistry lab report for back titration Name: Ashenafi Asfaw Beyene Back (Indirect) Titration Vitamin C estimation by Back Titration Table1: The amount of volume (in cm3) and concentration (in M) of KI‚ KIO3‚ and H2SO4 which were used in the experiment of Vit C estimation
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Pos t-Lab Data Summary Note : some questions will display a variable like "nCount" or "SyInput" instead of an actual number in the data summary. Q# Question Text 5) Data Entry - No Scoring Enter the precise mass in GRAMS of the potassium iodate used to prepare your primary standard solution. Your mass precision should be reported to a thousandth of a gram‚ i.e. 0.302. (Use 3 significant figures.) Your Answer: 0.536 No Points Possible 6) Scoring Scheme: 3-3-2-1 If one had weighed out precisely
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Practical 2: Observation of mammalian kidney model and tissue slides. Analyzing kidney filtration using simple filtration system Introduction: Kidney is part of mammalian’s body endocrine system. Every mammals have a pair of kidneys that is located at the middle back of the body and symmetrically beside the spine and below the rib cage. A kidney approximately 0.5% of the organism body weight. Every kidney will receive huge amount of blood to enable them to perform important task. The base unit of
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already reach the boiling point that gives off water vapor. The reaction gives the product of water vapor which is a gas. 2.) The formation of precipitate -When a solution of lead nitrate is poured into a solution of Potassium iodide a yellow precipitate of lead iodide is formed. 3.) Collision Theory Illustration 1.2 -The following hypothetical chemical reaction illustrates the collision of the molecules of two gases‚ A2 and B2‚ to form another compound of AB. - Furthermore‚ the colliding
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Erin Bolton Chemistry Lab Report April 29‚ 2015 Lab: Reaction Rates Introduction: In this experiment we studied the reaction of potassium persulfate‚ K2S2O8‚ with potassium iodide‚ KI. All chemical reactions have an energy barrier to overcome before the reaction will proceed. We will record data based on the concentration‚ temperature and catalyst for each experiment. Once this has been completed it will be graphed. Procedure: Due to the chemicals being used having hazard gloves are used
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General Features of Oxidative Additions Oxidative addition reactions usually involve a coordinatively unsaturated 16-electron metal complex or five-coordinate 18-electron species‚ and take the general from: [pic] If the A and B ligands in the product are considered to be formally –1‚ then the metal center has increased its oxidation state by +2‚ and this is the origin of the name oxidative addition. Oxidative reaction can occur when a metal complex
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WE + sodium nitroprusside 4 = purple / violet colour 2. Lead acetate test: WE + lead acetate 5 (aq) = black ppt 5. Nitrite: Pungent light brown gas 1. Starch-iodide test: WE + dil H2SO4 (or dil acetic acid); boil‚ then add solid KI + fresh starch sol = deep blue colouration Group II (conc H2SO4 group) – Cl(chloride)‚ Br- (bromide)‚ I- (iodide)‚ NO3- (nitrate)‚ CH3COO- (acetate)‚ C2O42(oxalate): Salt + conc H2SO4 1. No reaction: Group II anion not present. Continue to group III. 2. Chloride: Colourless
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chemicals like dioxin and sulphur into the rain clouds to increase precipitation. The mission was a success‚ with the opening ceremony taking place in dry weather. In case you are wondering why this cloud seeding isn’t more common place everywhere‚ the iodide used in the process is toxic. Large quantities result in toxic rain and most people would surely for it to rain then to poison ground! The Verdict Nonetheless‚ fireworks are not found to be an actual cause for rain. The concentration of chemicals
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