0.280 g of impure acetylsalicylic acid is recrystallized from a suitable solvent. The mass of the recrystallized product is 0.139 g and the melting point is 121.6–122.9 °C. Calculate the percent recovery of the acetylsalicylic acid to 1 decimal place.

The mixture contains benzoic acid, 2-napthol, and naphthalene. Dissolve the mixture in the polar solvent ether. When you react the mixture with 10% NaHCO3(sodium bicarbonatea weak base in aqueous solution) reacts with benzoic acid and forms sodium benzoate an ionic compound (similar to NaCl) that dissolves in aqueous solution (heavier than ether in density) and goes to the bottom of the centrifuge tube or to the bottom of the separatory funnel forming two layers. Then remove the bottom aqueous layer and collect in a beaker labeled as bicarbonate extract. Acidify the bicarbonate extract in the beaker to give benzoic acid. The top ethereal layer contains in the centrifuge tube or separatory funnel 2-napthol and naphthalene. To this top layer add 10% NaOH (sodium hydroxideis a strong base in aqueous solution reacts with only 2-napthol, a weak acid forming 2-napthoxide an ionic compound soluble in aqueous solution (similar to NaCl) that goes to the bottom of the centrifuge tube or to…

5.0 mL of 1-butanol was mixed with 10 mL of HCl. The reaction was put on an ice bath and 4 mL of concentrated sulfuric acid was added. This mixture was refluxed for 45 min and then the product was co-distilled with water using a simple distillation apparatus. Water and the product are immiscible. 1-butanol has a molar mass of 74.12 g/mol, a density of 0.810 g/mL, and a boiling point of 118 C. The product has a molar mass of 92.57 g/mol, a density of 0.880 g/mL, and a boiling point of 78 C. What is the nucleophile in this reaction? What is the role of H2SO4 in this reaction? Calculate the theoretical yield for this reaction. Give your answer in grams.  Select the following statements that can be said about the reaction shown.

Explain the difference between saturated and unsaturatedsolutions.

MODIFIED TRUE OR FALSE Write the correct word to make the statement true if it's false 1. The formation of black smoke upon combustion of hydrocarbons indicates incomplete combustion which means that the sample has a [low] C to H ratio. 2. In steam distillation, the desired substance decomposes and is obtained at a temperature [higher] than its actual boiling point.

A sample containing chlorophenol, C6H4ClOH, was analysed by gravimetric analysis. A  0.783-g of this sample goes through a chemical process allowing the chlorine in the chlorophenol to precipitate as silver chloride, weighing 0.271 g. Calculate the % (wt/wt) of the chlorophenol  in the sample, assuming that chlorophenol is the only source of chlorine in the sample. Provide your answer to two decimal places and without units. Avoid using scientific notation.

A mixture contain benzoic acid, salt, powdered silica (white sand) and contaminated with coloring. The aim of the experiment is to recover the pure benzoic acid and salt , make a schematic diagram or sketch on what method is applied to separate each component from the mixture to obtain the desired product.

Which of the following would be effective in separating iso-butanol and cyclopentane? iso-Butanol boiling point: 108 °C Cyclopentane boiling point: 49.2 °C both simple and fractional distillation fractional distillation simple distillation none of the above

hi! please be as specific as possible in your explanation, thank you!

You were given a mixture of two miscible solvent A and B that you are tasked to separate. You know that solvent A has a boiling point of 49 oC while solvent B has a boiling point of 174 oC. Which of the listed method would overall be the most efficient?    Fractional distillation Recrystallization Solid-liquid extraction Liquid-liquid extraction Simple distillation Acid-Base extraction