number of drops of sodium hypochlorite necessary to make a diluted food dye change to colorless in less than three minutes helps calculate the absorbance which can then be analyzed to find the pseudo rate constant and eventually leading to the rate constant and the rate law. The results show that the m and n are both 1st order which makes the overall order of the blue dye 2nd order. Results: In this experiment‚ rate laws and graphs help calculate the oxidation of food dyes by sodium hypochlorite. During
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and potassium. | Vinegar is an acid liquid obtained from an alcoholic liquid‚ as cider‚ by oxidation‚ as an acetous fermentation: used as a condiment and as a preservative. | is produced either by fast or slow fermentation processes. | | 1 tsp. Salt | Calories0 | | Fat0g | | Carbs0g | | Protein0g | There are 0 calories in 1 teaspoon of Salt. | Calorie breakdown: 0% fat‚ 0% carbs‚ 100% protein. Sodium 2325mg | 97% | | | Salt Preservation – helps protect against microorganisms‚ bacteria through
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the reaction of aluminum sulfate and sodium hydroxide contains which of the following species? a) 3Al3+(aq) b) OH–(aq) c) 3OH–(aq) d) 2Al3+(aq) e) 2Al(OH)3(s) ANS: c) 3OH–(aq) PAGE: 4.6‚8 6. Which of the following is a strong acid? a) HF b) KOH c) HClO4 d) HClO e) HBrO ANS: c) HClO4 PAGE: 4.2 7. Which of the following is not a strong base? a) Ca(OH)2 b) KOH c) NH3 d) LiOH e) Sr(OH)2 Ans: c) NH3 Page: 4.2 8. When sodium chloride and lead(II) nitrate react
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Determination of an Electrochemical Series In electrochemistry‚ a voltaic cell is a specially prepared system in which an oxidation-reduction reaction occurs spontaneously. This spontaneous reaction produces an easily measured electrical potential which has a positive value. Voltaic cells have a variety of uses and you commonly refer to them as a “battery”. Half-cells are normally produced by placing a piece of metal into a solution containing a cation of the metal (e.g.‚ Cu metal in a solution
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Exam 3 Study Guide Chapter 11: Acid-Base Balance During Exercise Acids and Bases Acid Molecule that can liberate H+ (proton donor) Increases H+ concentration in solution Lactic acid is a strong acid Base Molecule that is capable of combining with H+ Bicarbonate (HCO3-) is a strong base pH Expression of H+ solution in solution Negative logarithm of H+ concentration pH = -log10[H+] pH of pure water pH (pure water) = -log10[H+] = 7.0 pH of Blood Normal pH = 7.4 ± 0.05 Acidosis pH
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test was conducted. A change in the strip to a deep blue color would signal an excess of sodium hypochlorite reagent present. An excess is the reagent symbolizes the end of the reaction because there is no longer any reactant left to consume reagent. After the reaction was deemed completed‚ the product was isolated and purified by ether extraction‚ aqueous extraction and evaporation. To determine how sodium hypochlorite acts as an oxidizing agent‚ the starting diol and final product were characterized
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B) Site of synthesis: 1- In pancreas: Synthesis of taurine in the mammalian pancreas occurs through the cysteine sulfinic acid pathway. First‚ in this pathway is oxidation of cysteine sulfahydryl group to sulfonic acid‚ this oxidation is catalyzed by the enzyme cysteine dioxygenase. In turn‚ cysteine sulfonic acid is decarboxylated to hypotaurine by sulfonoalanine decarboxylase. It is not well known whether hypotaurine is then enzymatically or spontaneously oxidized to taurine. 2- in CNS: Biosynthesis
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Displacement Reaction In a double displacement or metathesis reaction two compounds exchange bonds or ions in order to form different compounds. AB + CD ? AD + CB An example of a double displacement reaction occurs between sodium chloride and silver nitrate to form sodium nitrate and silver chloride. NaCl(aq) + AgNO3(aq) ? NaNO3(aq) + AgCl(s) Acid-Base Reaction An acid-base reaction is type of double displacement reaction that occurs between an acid and a base. The
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10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. Define the terms: oxidation and reduction in terms of loss or gain of electrons. P.714 Identify electron transfer in redox equations. P.714 Identify oxidation and reduction half-reaction equations in an oxidation-reduction (redox) equation. P.715- 716 Identify a redox equation as the sum of the oxidation half-reaction and the reduction halfreaction. P.715- 716 Identify the species oxidized‚ the species reduced
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solution would be 0.00935 M. Enter your calculated molarity of the primary standard KIO3 solution. Please use 3 significant figures. Your Answer: 0.01 You Scored 3 points out of 3 Possible 7) Data Entry - No Scoring Standardization of the sodium thiosulfate solution using the potassium iodate primary standard solution. We must examine each of the three acceptable trials. First‚ let’s consider the analyte volume. You were instructed to pipet two 10.00 mL aliquots of potassium iodate into
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