Percent Yield C7H6O3 salicylic acid + CHO acetic anhydride C9H8O4 + Aspirin CH3COOH acetic acid 10.00 kg of salicylic acid is mixed with 10.00 kg of acetic anhydride. What is the % yield for aspirin if 11.2 kg is produced?
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- Question. Determination of percent water (%H₂O) in hydrated FeSO4nH₂O is demonstrated in General Chemistry Laboratory (I), Chem. 105. The following table contains the results collected from the students groups. 1 2 3 4 5 6 (a) Calculate the average number of water molecules (b) %H₂O in each sample. 3.38 3.47 3.35 3.40 3.44 3.41 1.4 1.35 1.35 1.44 1.49 1.39 Mass of water (g) Moles of water Moles FeSO4 11= Moles H₂O Mole FeSO Average n % water in hydrated salt (wt/wt) Hint: Atomic mass: Fe = 56 g/mol; O = 16 g/mol; H = 1.0 g/mol; S = 32 g/mol.A student crystallizes 1.8 g of benzoic acid and isolate 0.5 g as the first crop. What is the percent recovery in this first crop?Mass of oleic acid (glyceryl trioleate)=3.978g Mass of soap (sodium oleate)=3.8954g Moles of Oleic Acid (glyceryl trioleate) 3.978g/(885.4g/ml)=0.004493mol Moles of Soap (sodium oleate) 3.8954g/(304.4g/ml)=0.01279 What is the theoretical yield? What is the yield percentage? of the one with less molarity
- ou separated acetanlide from sand and sodium chloride (NaCl) via recrystallization. You separated the recrystallized acetanilide from the dissolved NaCl using a seperatory funnel. You started the separation experiment with 4 g of an impure mixture of NaCl, sand, and acetanilide (MW= 135.17 g/mol) and you collected 3.2 g after the recrystallization experiment.Whats the percent yield?Part 52.9g of beta-napthol and 1.65g of KOH were dissolved in 20ml of methanol with 1.8 ml of etl in a 50ml in round bottom flask and reacted to form 0.47 g of nerolin. What is the theoretical, actual and percent yield?
- Sodium carbonate is a reagent that may be used to standardizeacids in the same way. In such standardization it was found that a 0.432-g sample ofsodium carbonate required 22.3 mL of a sulfuric acid solution to reach the end point forthe reaction.Na2CO3(aq) + H2SO4(aq) -----> H2O(l) + CO2(g) + Na2SO4(aq)What is the molarity of the H2SO4?Molar Mass (g/mole) Density (g/mL) Equivalent (ratio) Reagent Salicylic acid Amount Mole 138.12 Acetic anhydride 102.1 1.08 Sulfuric acid 98 1.8 catalyst3- A sample of a solution weighing 850.0 g is knowno con potassium chlorice, What is the weight percent of potaSINm chloa in the solution? Ans. 1.96% n0203 moles of 4- Conc. HCl has a density of 1.19 g mL and is about weight HCI. The Molarity and norraality of the solution is: (a) 11.9 and 11.9 (c) 12.07 and 12.07 (d) 5.95 and 11.90 (b) 11.9 and 23.8 Show your calculations Ans (a)
- A side reaction of the rayon manufacturing process from wood pulp is: 3CS2 +6NaOH=2Na2CS3 +Na2CO3 +3H2O How many grams of Na2CS3 are produced in the reaction of 92.5ml of liquid Cs2 (d: 1.26g/ml) and 2.78mol of NaOH? How much excess reagent is left? How much would it take for the limiting reagent to react with the excess reagent?For the following reaction: H3PO4 + 3 KOH–K3PO4 + 3 H,O (1) What is the equivalent mass of H3PO,? g/equiv (2) Calculate the number of equivalents in 20.9 grams of H3PO4. equivThe following equation describes the oxidation and ethanol to acetic acid by potassium permanganate 3C2H5OH+4KMnO4 —-> 3HC2H3O2 +4MnO2+4 KOH +H2O 5.00 g of ethanol and a excess of aqueous KMnO4 are reacted, and 5.24 g of HC2H3O2 result. What is the percentage yield? A. 100% B. 80.4% C. 26.8% D. 19.6%