Indicate with (+) or (-) if the test compound is soluble or insoluble in the solvent. Is Acetanilide solube or insolube in 5% NaOH? _______ Is Acetanilde soluble or insolube in 5% HCL? _______
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- Transfer 3-4 drops or a pinch of the test compound (Acetanilide) to 3 ml of the solvents, 5% NaOH and 5% HCL
- Shake the mixture thoroughly.
- The time required for the solute to dissolve in the solvent should not be more than 2 minutes.
- Indicate with (+) or (-) if the test compound is soluble or insoluble in the solvent.
Is Acetanilide solube or insolube in 5% NaOH? _______
Is Acetanilde soluble or insolube in 5% HCL? _______
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- A pharmacist is conducting an analysis of 2.7 g sodium bicarbonate and titrated with 26.05 mL of 0.9987 N HCl. What is the potency or percent assay of sodium bicarbonate? Did it pass the USP requirement? ROUND-OFF TO 2 DECIMAL PLACES. Answer = _% Disposition (Passed or Failed) = _Transfer 3-4 drops or a pinch of the test compound (Aniline) to 3 ml of the solvents, 5% NaOH and 5% HCL Shake the mixture thoroughly. The time required for the solute to dissolve in the solvent should not be more than 2 minutes. Indicate with (+) or (-) if the test compound is soluble or insoluble in the solvent. What is the solubility class of Aniline in 5% NaOH? _______ What is the solubility class of Aniline in 5% HCL? _______Transfer 3-4 drops or a pinch of the test compound (Aniline) to 3 ml of the solvents, 5% NaOH and 5% HCL Shake the mixture thoroughly. The time required for the solute to dissolve in the solvent should not be more than 2 minutes. Indicate with (+) or (-) if the test compound is soluble or insoluble in the solvent. What is the solubility class of Aniline in 5% NaOH? (Very soluble, freely soluble, soluble, sparingly soluble, slightly soluble, very slighlty soluble, practically insoluble) What is the solubility class of Aniline in 5% HCL? (Very soluble, freely soluble, soluble, sparingly soluble, slightly soluble, very slighlty soluble, practically insoluble)
- Transfer 3-4 drops or a pinch of the test compound (Acetanilide) to 3 ml of the solvents, 5% NaOH and 5% NaHCO3 Shake the mixture thoroughly. The time required for the solute to dissolve in the solvent should not be more than 2 minutes. Indicate with (+) or (-) if the test compound is soluble or insoluble in the solvent. What is the theoretical solubility of Acetanilide in 5% NaOH? _______ What is the theoretical solubility of Acetanilide in 5% NaHCO3? _______20 ml of a 100 mg/l phenol solution in water is placed in a vial with 20 ml of a fluorocarbon solvent. The organic phase (fluorocarbon solvent) is immiscible with water. The vial is completely filled with the two phases, thus there is no air or contaminant volatilization. After an hour of agitation, the two phase system reaches equilibrium. The two phases are separated and the fluorocarbon is analyzed for total phenol. The resulting phenol concentration in the organic phase is 16.0 mg/l. Compute the unitless partition coefficient (KF-W) for phenol. Compare your calculation with KF-W obtained from an empirical relationship: log10KF-W 0.71 - 0.862log10 CWsat. KF-W means the partition between the fluorocarbon solvent, F, and water, W. Only typed solution.Transfer 3-4 drops or a pinch of the test compound (Aniline) to 3 ml of the solvents, 5% NaOH and 5% HCL Shake the mixture thoroughly. The time required for the solute to dissolve in the solvent should not be more than 2 minutes. Indicate with (+) or (-) if the test compound is soluble or insoluble in the solvent. Is Aniline solube or insolube in 5% NaOH? _______ Is Aniline soluble or insolube in 5% HCL? _______
- Preparation of sodium standard solutions with concentrations of 10, 20, 40, 60, 80, 100 (ppm) in a volume of 100 ml for each solution. [using a 100 ppm reference solution prepared from a weight of sodium chloride in a volume of 1 liter]Transfer 3-4 drops or a pinch of the test compound (Acetanilide) to 3 ml of the solvents, 5% NaOH and 5% HCL Shake the mixture thoroughly. The time required for the solute to dissolve in the solvent should not be more than 2 minutes. Indicate with (+) or (-) if the test compound is soluble or insoluble in the solvent. What is the solubility class of Acetanilide in 5% NaOH? (Very soluble, freely soluble, soluble, sparingly soluble, slightly soluble, very slighlty soluble, practically insoluble) What is the solubility class of Acetanilde in 5% HCL? (Very soluble, freely soluble, soluble, sparingly soluble, slightly soluble, very slighlty soluble, practically insoluble)A 50.00 (±0.03) mL portion of an HCl solution required 29.71(±0.03) mL of 0.01963(±0.0030) M Ba(OH)2 to reach an end point with bromocresol green indicator. The molar concentration of the HCl is calculated using the equation below (attached image): a.) Calculate the uncertainty of the result (absolute error). M=0.02333(±?????) M b.) Calculate the coefficient of variation for the result. CV= (Sy/y) x 100%
- A double indicator analysis of a soda ash sample was performed. The student weighed 0.4375 g of the soda ash sample and dissolved it to make 100.0 mL solution. The students then took a 25 mL aliquot of the sample solution, then added 25 mL H2O and performed double indicator titration. The phenolphthalein endpoint required 10.27 mL 0.04027 M HCl titrant. The sample was further titrated using Methyl Orange and took a total of 15.97 mL of the titrant to reach the endpoint. Given that the molar weight of Na2CO3 - 105.99 g/mol, NaHCO3 = 84.007 g/mol, and NaOH - 39.997 g/mol answer the following: a. What are the components of the soda ash sample? (The constituents of the sample came from Na2CO3, NaHCO3, and NaOH). b. What are the moles of each component in the titrated 25 mL aliquot? c. What is the percent composition in (% w/w) of each component in the soda ash sample?The sample is dissolved in a mixture containing 10ml of distilled water and 20 ml of dilute HCL.After dilution, add 50 ml of water and 1g of potassium bromide.The mixture is titrated with 0.1N NaNO2 solution . 4 drops of atropine are used as an indicator .At the last point of the titration the color change from red to yellow. Write the reaction that takes place in the nitrometer and the sulfatiazole sample indicator?A local company sent you their green alternative for window cleaner to be tested for percent (w/v) acetic acid content. For your experiment, you first standardized your NaOH titrant with 0.8053 g of (99.80 % purity) KHP. You used 40.60 mL of NaOH for your standardization. After that you then analyzed a 50.00 mL sample and found that you needed 33.20 ml NaOH to reach the end point. Summary of results: Standardization Sample analysis KHP Weight (g) Purity NaOH (mL) used Determine the following: 0.8053 g Volume of sample 50.00 mL 99.80% NaOH (mL) used 33.20 mL 40.60 mL a. Molarity of NaOH b. % (w/v) acetic acid