In this experiment the initial mass of the sodium carbonate used was 2.69g. In each titration‚ 3 drops of methyl orange was added to the sodium carbonate solution. With this information the titration can begin‚ and the results obtained are shown below: Titration readings Titration Rough 1 2 3 4 5 Initial 0.00 4.30 22.00 21.00 15.00 25.90 Final 4.30 22.00 38.60 37.60 32.60 42.20 Titre (cm3) 4.30 17.70 16.60 16.60 17.60 16.30 Therefore‚ the average titre would be calculated as follows;
Premium Titration Chemistry Mole
Objective To synthesis methyl orange by coupling diazotised sulphanilic acid with N‚N-dimethylaniline. Materials (Chemicals) Sulfanilic acid‚ 2.5% aqueous sodium carbonate solution‚ sodium nitrite‚ concentrated hydrochloric acid‚ N‚N-dimethylaniline‚ glacial acetic acid‚ 10% aqueous sodium hydroxide‚ saturated sodium chloride solution Apparatus 50 mL Erlemeyer flask‚ 250 mL beaker‚ test tube‚ hot plate‚ Buchner funnels Procedure In a 50 mL Elermenyer flask 1.2 g of sulfanilic acid and
Premium Sodium chloride Chlorine Hydrochloric acid
Methyl Red Voges-Proskauer Test Questions A.What is meant by the term biochemical profile? Biochemical profile is a variety of biochemical tests. These various tests are used to measure the constituents of plasma and serum in blood. B.What metabolic end product does the MR test for? The metabolic end product MR tests for are the different bacteria’s related to their individual patterns of glucose metabolism. C.What does an orange color indicate as a result for an MR test? An orange color as a result
Premium Metabolism Bacteria Oxygen
Methyl Red and Voges-Proskauer Test The Methyl Red test shows which bacteria are creating stable acids through mixed acid fermentation of glucose. This helps to identify enteric bacteria by examining how they metabolise glucose. Every enteric bacteria first produces pyruvic acid from metabolism of glucose. A methyl red positive enteric bacteria‚ uses the mixed acid pathway when breaking down pyruvic acid to different acids‚ like lactic‚ acetic‚ and formic acids. The Voges-Proskauer test determines
Free Bacteria Metabolism Protein
EFFECTS OF COLOR ON TEST PERFORMANCE 1 Effects of Color On Test Performance Taylor Alderson‚ Ovsanna Balian‚ Jacqueline Christopher‚ Diana Macias Pasadena City College EFFECTS OF COLOR ON TEST PERFORMANCE Abstract The present experiment examined the consequences of exposure to the color red and its effects on achievement in test performance. In this study the ink color used to print a test was manipulated to determine the causal relationship between exposure to the color red and test 2
Premium Color Psychology Primary color
Forming Methyl Orange an Azo Die Abstract: An synthetic azo dye was created by reaction of diazonium salt with N‚N-Dimethylanaline. The final product created was 4-dimethylaminoazobenzene-4-sulfonic acid‚ an orange clay-like substance. Sulfanilic acid was chemically manipulated by using sodium carbonate followed by cooled sodium nitrate and hydrochloric acid to form the diazonium salt used in the reaction. The products were washed in ethanol. The product was obtained at an 84% yield and was
Premium Chemistry Hydrogen Chemical reaction
After taking the true colors test my result was that my personality was the color orange. Some weaknesses of my color are violent‚ loud‚ rude‚ and belligerent. Although some of the strengths include adventurous‚ generous‚ tolerant‚ charming‚ and skillful. I find these somewhat accurate but nothing surprised me because I can tell if something is untrue about me even if a sheet says it is part of my personality‚ such as the results says one of my strengths is being tolerant which I am barely ever
Premium Management Psychology Person
“The Masque of the Red Death” is a Gothic style story written by Edgar Allan Poe. In this story‚ many setting and descriptive details contain symbols. These symbols are very important because each symbol stands for something and gives readers much thought. For example‚ the red color represents the blood and the clock represents the time‚ etc. Through these symbols‚ we can learn the story teaches us that no matter you are rich or poor‚ you can not avoid death. There are seven chambers in Prince
Premium Edgar Allan Poe The Masque of the Red Death English-language films
over the love of this life Daisy‚ he uses hope to fuel his drive for taking Daisy and ultimately ends in a tragic event. The author of The Great Gatsby uses colors for symbolism in this book. Green for Gatsby’s money and how rich he is‚ blue for Gatsby’s hope and his chase for daisy‚ throughout the whole story the book focuses on his hope‚ red for danger Gatsby’s secret life and his past how did he get all this money
Premium The Great Gatsby F. Scott Fitzgerald Jay Gatsby
12:30-2:30 Mrs. Rhodes July 22‚ 2013 Introduction: Do you have a favorite color? Do you have more than one? Do you know what colors represent you? (AG) Well‚ I have two favorite colors‚ and they represent me very well. (RT) Today I’m going to talk about two colors that represents me and why. (TH) My first color (TR) is Red. (MP 1) The reason I chose red is because red is my favorite color. Why I like red has always been a mystery‚ until age 13. At the age of 13 I realized that I had
Premium Red Color Primary color