the textbook says in regards to the history and uses of the chemicals that are being utilized in the experiment. Nothing elaborate – just the basic idea behind the reaction. Reaction (3 points) Reaction: sodium benzoate + hydrochloric acid ( benzoic acid + sodium chloride Amounts: 2.00 g 5.0 mL 3M + HCl → + NaCl ***Note that if there is no “reaction”
Premium Hydrochloric acid Chlorine Sodium chloride
effectively killing most yeasts‚ bacteria and fungi. Sodium benzoate is effective only in acidic conditions (pH < 3.6) making its use most prevalent in foods such as preserves‚ salad dressings (vinegar)‚ carbonated drinks (carbonic acid)‚ jams (citric acid)‚ fruit juices (citric acid)‚ and chinese food sauces. It is also found in alcohol-based mouthwash and silver polish. More recently‚ sodium benzoate has become apparent in many soft drinks‚ including Sprite‚ Fanta‚ Sunkist‚ Dr Pepper and Coke Zero. It
Premium Water Sodium chloride Bacteria
benzoate .210 ml Cold water 1 ml 3 ml conical vial + Methyl benzoate 20.321 g Ice-cold methanol .3 ml Methyl benzoate 0.4095 g Crude product 0.6981 g Sulfuric acid (1st added) .50 ml Melting point (Literature value) 78-80 °C Sulfuric acid (2nd added) .15 ml Melting point (experimental value) 72.4-733.7 °C Nitric acid .15 ml Molar mass of methyl benzoate 136.15 g/mol Molar mass of methyl m-nitrobenzoate 181.15 g/mol Molar mass of HNO3 63.01 g/mol Melting point (Literature
Premium Benzene Sulfuric acid Stoichiometry
SEGi University Extraction of Benzoic Acid by Balvinder Singh (SCM 015 677) Lab Partners: 1) Surrean Rao 2) Wong Kai Jun 3) Kanaga Luckshimi 4) Sasiskala Regal ECE2332 Chemical Engineering Practices Submitted: 1st October 2013 Supervisor: Mr Ayman William 1.0 Abstract /summary The purpose of this experiment to carry out in the lab is because to determined the capability to water droplet to carry out the liquid-liquid extraction. The studies is to determine
Premium Concentration Liquid Chemistry
from willow bark – willow bark contain an active ingredient know as salicylic acid which used to make aspirin (pain reliever) Identifying salicylic acid Three chemical tests which are used to predict the structure of salicylic acid 1. Salicylic acid in aqueous solution is weakly acidic ( presence of COOH group) 2. Salicylic acid reacts with alcohols to form esters which give of strong odours. 3. When salicylic acid is added to a neutral solution such as iron chloride it turns intense pink colour
Premium Carboxylic acid Chemistry Salicylic acid
(E)- and (Z)-Phenylcinnamic acids Thusanth Jogarajah‚ Dr. Lana Mikhaylichenko * Department of Physical and Environmental Sciences‚ University of Toronto Scarborough‚ 1265 Military Trial‚ Scarborough‚ ON‚ M1C 1A4 Received: February 6‚ 2013; E-mail Thusanth.Jogarajah@mail.utoronto.ca Abstract – Add text here Introduction: The name of this reaction is called the Perkin’s reaction. The reaction was first used by William Perkin to create phenylcinnamic acids (Johnson). It is very similar
Premium Benzene Proton Acetic acid
4-nitroaniline had a percent recovery of 18.67% and naphthalene had a percent recovery of 80%. Naphthalene had a relatively high percent recovery‚ and the loss of product can be explained by error inherent. The low percent recovery of 4-nitroaniline is mainly due to the fact that anhydrous sodium sulfate was accidently added to the flask. Therefore‚ some product was lost as the aqueous solution with the protonated 4-nitroaniline reacted with the drying agent. However‚ more errors to explain the results
Premium Chemistry Yield Benzene
The obtained mass of benzocaine and benzoic acid mixture was measured to be 2.075 grams. Following being dried for a week the mass of benzocaine was recorded to be 0.250 grams‚ and benzoic acid was recorded to be 0.600 grams. The melting point range of benzocaine was measured to be 89.5°C-91.5°C‚ while benzoic acid’s melting point range was measured to be 129°C-131.3°C. The percent mass recovered was calculated to be 40.96% for the experiment. Table 1 illustrates the collected information. Starting
Premium Chemistry Oxygen Solvent
salicylic acid (Hint: You should use your empirical data to support your claim). -The Salicylic acid that I obtained had a melting point range around 157-158 degrees Celsius for Part A. For Part B the melting point range was 156-157.5 degree Celsius. Part B‚ I would say the sample is less pure because of the notion that impurities lower the melting point. Since part A ‘s melting point was higher and closer to the melting point of the pure sample‚ it was more pure. The pure Salicylic acid that I got
Premium Temperature Purity Celsius
Molecular weight MP/BP Grams Used Moles Used Methyl benzoate 136.16 g/mol -12.5 OC /199.6 OC 0.28g 2.056*10-3 Sulfuric acid 63.01 g/mol 10 OC /337OC 0.8g 1.2*10-2 Nitric acid 98.08 g/mol -42 OC /83 OC 0.2g 2.039*10-3 Methyl 3-nitro benzoate 181.15 g/mol 78 OC /279 OC 0.107g 5.906*10-4 Procedural Details To a reaction tube 0.6 mL of concentrated sulfuric acid was added; followed by 0.28g
Premium Chemistry Benzene Sulfuric acid