Commercial Bleach Lab Guidelines Name‚ Exp. Name‚ Number‚ Date (we did lab)‚ Partner(s) Purpose Compound Names‚ Formulas‚ and Molar Masses (5 used – no formula or molar mass for starch) Reactions (use the four listed on the front page of the lab) Procedure/Observations Include initial observations and final observations/odors‚ masses of KI… Results (Data Table) Make a table that has your data of KI masses‚ and the three volumes (from the three trials) needed to titrate the bleach Calculations
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To determine the rate law with respect to bleach and blue dye‚ a series of graphic and algebraic manipulations were done on the data obtained in the kinetic trace experiment in order to determine the different components that made up the rate law. Using absorbance spectroscopy to monitor concentration over time‚ rate order of the dye was found to be 1st order through the integrated rate law and through the proportionality method; the order of the bleach was also determined to be 1st order. Using
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purpose of this lab was to determine the effectiveness of antiseptics‚ disinfectants‚ and antibiotics on bacteria. The hypothesis was that if bleach was used‚ it would be the most effective because bleach is commonly used to clean and disinfect various things. The variables that were tested were antibacterial soap and Scope mouthwash for the antiseptics; bleach and ammonia for the disinfectant; and Cipro‚ erythromycin‚ and tetracycline for the antibiotics. All of these chemicals were used on the bacteria
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were studied. Elodea was inserted into different beakers. One containing water and the other‚ bleach. The elodea was left unattended for an hour so that observations could be made to tell the difference in the results each beaker produced. After an hour the quantity of CO2 present was measured for the beaker with water and the beaker containing bleach. The results recorded were inconclusive because the bleach had a buffer that evidently lowered the pH‚ the beaker that had water in it showed signs that
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will demonstrate how a chemical reaction from vinegar‚ water‚ and bleach can accelerate the rusting process of steel. If steel wool pads are submerged in bleach‚ water‚ and vinegar‚ then the steel wool pads will rust faster in water because Electrolytes accelerate the corrosion process when combined with water. Materials and Procedure: you will need: Steel wool pads (the soap-free kind) 3 Medium sized jars Water Vinegar Bleach Procedure: 1. Place the steel wool pad into the jar. 2. Fill
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-50 ml glass beaker Bleach Water Lemon juice Vinegar 5 glass test tubes Drying rack Timer Graduated cylinder Hydrogen peroxide Procedure: 1. Place all 5 glass tubes face up in the drying rack 2. Use tweezers and soak one potato cube into water and leave it there for 2 minutes. 3. After 2 minutes‚ use tweezers and place the potato into the first testing tube. 4. Repeat steps 2 and 3 four more times except soaking the other 4 potatoes in baking soda solution‚ bleach‚ vinegar‚ and lemon
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alcohol (rubbing alcohol)‚ bleach‚ and shout. The product that did the best at pulling out stains was the Isopropyl alcohol. Isopropyl alcohol is a clear‚ colorless‚ flammable‚ mobile liquid‚ (CH3)2CHOH‚ used in antifreeze compounds‚ in lotions and cosmetics‚ and as a solvent for gums‚ shellac‚ and essential oils. It did great job at pulling stains right out of the cloth. This products alone got rid of almost all the stains besides the red sharpie. Another product we used bleach. To be honest coming
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different “flower foods” and the role of bleach in the whole system. Abstract: Six Cut flowers (Number. 1‚ 2‚ 5‚ 6‚ 7‚ and 8) were placed in different vases from 10th March 2011 to 25th March 2011. Solution 1 and 2 which contained water and water mix bleach can last for at least 8 days. Solution 5 and 6 which contained lemon juice and sugar were tending to last for longer for 10 days or more. Solution 7 and 8 can only last for 4 – 5 days since Coca Cola‚ bleach and warm water were added. Introduction:
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that do occur successful. Ordinary household bleach is an aqueous solution of sodium hypochlorite‚ NaClO‚ this contains little more than 5% NaClO by mass. Bleaching is caused by the ion. Under normal circumstances this ion breaks down slowly giving off oxygen gas and the chloride ion‚ . In order to speed up this reaction a catalyst is needed. In this experiment the catalyst used was cobalt (II) nitrate solution. When this is added to the bleach a black precipitate of cobalt (III) nitrate is
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and expertise which Dr Desnoes shared were a true eye-opener. What is skin-bleaching? The dictionary tells us that to bleach is to make something white or colourless mainly by using chemicals. With skin-bleaching‚ chemicals are used to lighten (or whiten) the skin. The chemicals are applied to the skin directly or are taken by mouth as pills. On the face of it‚ people bleach with a view to getting lighter tones than their natural complexion. The Big Eye News of London‚ England‚ reported recently
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