Benzoic acid is 9 times more soluble in chloroform than in water. The percent benzoic acid that will remain from a water solution of benzoic acid if twice as much chloroform as water is used is 5.3% 3.5% 6% 2.6%
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- How to prepare 100 mL of 10% AlCl3True or False: Carboxylic acids containing six or more carbon atoms per molecule are more soluble in 3 M sodiumaqueous hydroxide than in dichloromethane.The following questions all are based on the data in this table: Substance Solvent Temp.,oC Solubility, g per 100 mL X heptane 20 23.5 X heptane 80 27.0 X 1-propanol 20 0.6 X 1-propanol 80 8.7 Y heptane 20 4.0 Y heptane 80 4.0 Y 1-propanol 20 22.0 Y 1-propanol 80 31.0…
- Materials Needed solid I2 solid CUSO4-5H20 food dye solid (NH4)2SO4 heavy metals waste container halogenated waste container non-halogenated waste container semi-micro test tubes and rack regular test tubes and rack squash pipettes acetone cyclohexane propan-2-ol Method Part A: Solubility of ionic and molecular solids 1. Place a small amount (about the size of 1 grain of rice, see picture) of copper sulfate into each of three DRY semi-micro test tubes. Add 20 drops of water to the first test tube and gently flick the test tube with your finger to ensure mixing. 2. Repeat step 1 using acetone in place of water as the solvent in the second test tube. 3. Repeat step 2 replacing acetone with cyclohexane in the third test tube. Hold the test tubes against a white background to compare the solubility of copper sulfate in the three solvents and record your results. Discard these mixtures into the heavy metals waste container in the fume cupboard. Once these test tubes have been emptied you…Provide a flow chart analogous to separate a diethyl ether solution containing benzoic acid, 2-naphthol (a weak acid), 4-nitroaniline (a weak base), and naphthalene3. The melting point of salicylic acid is higher than that of acetylsalicylic acid. Explain why this is with reference to their functional groups. bibs pilvolle to-ces icon 4. Tylenol also is an analgesic often taken by people allergic to aspirin. The active ingredient is acetaminophen. sulsV HO- 10 ONE NH H3C bis blas pily Would acetaminophen give a positive phenol test? (Y/N). bbs selyde A\8 Does this compound contain the ester functional group? If not, what functional group(s) is/are present? Benzer
- Chemistry Because the three possible unknowns (cinnamic acid, vanillin and 4- hydroxybenzaldehyde) have either carboxylic acid or phenol functional groups, they are all weak acids. • How will this weak acidity affect the freezing point depression? [Select] • What is the source of this affect? [Select] • How will the calculated molecular mass differ from the actual value? [Select] Because the three possible unknowns (cinnamic acid, vanillin and 4- hydroxybenzaldehyde) have either carboxylic acid or phenol functional groups, they are all weak acids. • How will this weak acidity affect the freezing point depression? [Select] [Select] The solution freezing point is lower than it should be. The solvent freezing point is higher than it should be. The solvent freezing point is lower than it should be. The solution freezing point is higher than it should be. value? [Select] n the actualWhy do we need carbon dioxidefree water in preparing the volumetric solution?What is true about the solubility of methyl benzoate and the ion of benzoic acid (benzoate ion)? Both are soluble in water, a polar solvent Both are soluble in toluene, a nonpolar solvent Methyl benzoate is soluble in water and the benzoate ion is soluble in toluene The benzoate ion is soluble in water and methyl benzoate is soluble in toluene
- How do we keep relative supersaturation low by controlling solute concentration? concentration should be constant concentration should be higher concentration should be lower concentration should be fluctuating1. What made an ashless filter paper ashless? 2.What type of precipitate is BaSO4?After dissolving our impure naphthalene in methanol, the solution looks red. What could have happened? a) The impurities are not present anymore b) There are more impurities in the naphthalene c) The impurities have also dissolved in the methanol d) Methanol is normally red
