3.50 Predict the water solubility of each of the following organic molecules. OH Но но OH а. С. Но- но OH OH sucrose caffeine (table sugar) (stimulant in coffee, tea, and many soft drinks) OH OH b. d. CH30 carotatoxin mestranol (component in oral contracentives) (neurotoxin isolated from carrots)
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- Order following liquids from most soluble to least soluble in water. Simply explain your answer. ethanol (CH3CH2OH) Carbon tetrachloride (CCl4) ether (CH3OCH3)Over time, as their free fatty acid (FFA) content increases,edible fats and oils become rancid. To measure rancidity, the fator oil is dissolved in ethanol, and any FFA present is titrated withKOH dissolved in ethanol. In a series of tests on olive oil, a stocksolution of 0.050 Methanolic KOH was prepared at 25C, storedat 0C, and then placed in a 100-mL buret to titrate any oleic acid[CH₃(CH₂)₇CH=CH(CH₂)₇COOH] present in the oil. Each offour 10.00-g samples of oil took several minutes to titrate: thefirst required 19.60 mL, the second 19.80 mL, and the third and fourth 20.00 mL of the ethanolic KOH.(a) What is the apparent acidity of each sample, in terms of mass% of oleic acid? (Note:As the ethanolic KOH warms in the bu-ret, its volume increases by a factor of 0.00104/C.)(b) Is the variation in acidity a random or systematic error? Ex-plain.(c) What is the actual acidity? How would you demonstrate this?b) % yield of ethanol from molasses (we used 50 mL of the molasses solvent for both distillation) c) % yield ethanol from sugars, assuming approximately half of molasses is reactive sugars C12H22O11 (sucrose) -> 4 CH3CH2OH + 4 CO2 my Simple distillation % ethanol was 100% (0.774) and my fractional distillation % ethanol was 100% (0.774).
- The process of Distillation is able to concentrate ethanol because: a. the boiling point of ethanol (78oC) is lower than the boiling point of water (100oC) b. CO2 is a gas that occupies ~22 liters per mole whereas ethanol is a liquid dissolved in water c. adding egg white traps CO2 bubbles which allows them to be separated from alcohol d. Sodium Aluminum Phosphate binds ethanol and concentrates it e. distillation removes the reducing equivalents “H2” from ethanol and lowers the calorie content making “light” calorie beveragesThe 1875 Chamber Street fire claimed many victims. A whiskey distillery in Dublin went into flames and released a river of whiskey, crowds gathered along the stream of alcohol to scoop up the liquor using caps, porringers, and other vessels. In all, 13 people died, not because of the fire, but ofalcohol poisoning. a. If the average human weights 137 pounds, the Human LD50 of ethanol is ~2000mg/kg. And the typical content of alcohol in whiskey is 40% . How much alcohol does the average human must drink to succumb to alcohol poison. Assume the density of whiskey is 1 so that 1 ml of whiskey is 1 gram of whiskey. In addition, assume that the LD50 is the amount required to succumb to alcohol poison.C7H21O4NHCl(aq) + NaOH(aq) ---> C17H21O4N(aq) + H2O (l) + NaCl(aq) When a 25mL of aqueous solution that contains 62.50g of the salt is treated with NaOH, the salt is converted to pure cocaine. How much water in litres is needed additionally to dissolve the formed pure cocaine?
- Ascorbic acid (C6H8O6) is also known as Vitamin C. How many molecules of C6H8O6 does a Vitamin C drink with 1.000*10^3 mg C6H8O6 contain?1.Prepare 250ml of 70% and 90% ethyl alcohol from 95% ethyl alcoholusing the formula: C1V1=C2V2.During an experiment in your chemistry lab, your instructor assigned your group to make a refill of Fehling’s A and Fehling’s B solution and Benedicts solution. Both Fehling’s and Benedict’s solutions are a reagent used to differentiate aldehydes from ketones and used for detecting reducing sugars. Your group was asked to make 120 ml of each solution. Show your complete solution. Preparation of Fehling's solution A:Dissolve 35g of Cu2SO4.7H2O in water and make up to 500mlPreparation of Fehling's solution B:Dissolve 120 g of KOH and 173 g of Sodium Potassium Tartrate (Rochelle salt) in water and make up to 500 ml
- 1. what is the solubility of ascorbic acid in water? (include references) 2. How much water is needed to dissolve 4500mg of ascorbic acid?1 The osmotic pressure of solution containing 7.0g of insulin per liter is 23 torr @ 25degrees Celsius. What is the molecular weight of insulin? Select one: a. 1500g b. 5700g c. 3500g d. 1300gRubbing alcohol is often used as a disinfectant and sometimes as a component of handsanitizers. If you were to purchase a bottle of rubbing alcohol at a store, it would most likely sayisopropyl alcohol or isopropyl rubbing alcohol, although it is also called isopropanol. Ethylalcohol is also used in hand sanitizers, and is actually more commonly used. Why would a handsanitizer whose major component is ethyl alcohol evaporate more quickly than one whose majorcomponent is rubbing alcohol?