(a) In liquid-liquid extraction, define and distinguish between (a) distribution constant and (b) distribution ratio [5 marks]
(b) Using suitable equations, outline the pH dependency of extraction of a carboxylic acid (RCOOH) from water into an immiscible organic solvent.
(a) In liquid-liquid extraction, define and distinguish between (a) distribution constant and (b) distribution ratio [5...
(a) Sketch out, and explain the expected log D vs pH plot in the solvent extraction of an organic amine RNH2 (pKa for RNH3 + = 9.5). [5 marks] (b) Iodine is found in organic forms in plants and animals, and in inorganic forms in natural water samples. Using suitable equations, explain the effect of added iodide on the distribution ratio for the solvent extraction of iodine from water samples. [5 marks]
(b) Iodine is found in organic forms in plants and animals and in inorganic forms in natural water samples. Using suitable equations, explain the effect of added iodide on the distribution ratio for the solvent extraction of iodine from water samples. [5 marks]
In the liquid- liquid extraction: A- Soluble compound removes from solid by using a solvent. B- Separating compound from a liquid solution by mixing it with immiscible solvent. C- Example: extraction of chlorophylls from plant leaves by using acetone as a solvent. D- AandB E- BandC
general organic chemistry liquid-liquid extraction This experiment does involve chemical reactions that involve amine of your unknown. Choose one of those acids and one of the to include those reactions in the appropriate section of the PreLab Write out chemical equations for the reaction of: an amine (RNH_2) with hydrochloric acid a carboxylic acid (RCOOH) with sodium bicarbonate a phenol (ArOH) with sodium hydroxide Prepare a flow chart similar to the one shown in Figure 6-1 the of one acid,...
Write a small introduction in words and a conclusion for this lab report Experiment 9 Acid-Base Extraction Liquid-liquid extraction utilizes the contrast solubilities of solutes in two immiscible solvents the separation of a mixture. An extracting solvent can be reactive that changes the character of solute. Consider a mixture of organic acid, organic base, and neutral substance, for example, benzoic acid, aniline, biphenyl, nd phenol. They sodium benzoate. Sodium hydroxide changes phenol to sodium phenoxide. Hydrochloric acid changes aniline to...
1)When you perform a liquid-liquid extraction using a separatory funnel, which of the following organic solvent is on the bottom of the aqueous phase and which is on top? (write your answer by the solvent name) a) Ethyl acetate b) hexane c) Dichloromethane d) diethyl ether 2) If you are performing a liquid-liquid extraction and you have a mix of a carboxylic acid and a non-acidic compound, which combination of solvents would you use for the separation? a) dichloromethane/HCI b)...
Acid/Base Extraction Liquid-liquid extraction is a technique that can be used to physically separate two substancesthat have varying solubility properties. Typically an aqueous solution can be extracted with anorganic solvent to isolate a compound or vice-versa. The specialized piece of glassware that isemployed for these types of separations is called a separatory funnel.In this experiment a mixture of benzoic acid and naphthalene will be purified using liquid-liquidextraction, more specifically an acid-base extraction. Since both compounds are soluble inethyl acetate (an...
HW.4 & 5 Liquid-Liquid Extraction HW4. A student wishes to separate a mixture of the two compounds shown below. They intend to use liquid-liquid extraction to do so. NH Aniline Naphthalene A) Aniline has an amine functionality and naphthalene is purely a hydrocarbon compound. An amine functional group is acidic, basic, or neutral? asic B) Given your answer to A, fill in the missing portions of the diagram that describe the process of the separation for aniline and naphthalene. Aqueous...
Name: Date: Separation of Acid/Base/Neutral compounds using liquid-liquid extraction OCH CHO HN Benzocaine Molecular Weight: 165.19 Melting Point: 88-90 °C 1,1-biphenyl Molecular Weight: 154.21 Melting Point: 68-70 °C trans-cinnamic acid Molecular Weight: 148.16 Melting Point: 132-135 °C Question 1: Identify the following compounds as Acid, Base or Neutral. (2 points) a. Benzocaine: b. Biphenyl: c. Trans-cinnamic acid: (2 points) _ (2 points) Question 2: Draw the structure in the box (5 points each): NaOH OCH,CH, HCM NaOHA HC form. Ples...
In the extraction of salicylic acid from water using dichloroethane, a student begins with 2.9 grams of the salicylic acid dissolved in 100 ml of water. After extraction with 20 ml of dichloroethane, drying and evaporation of the organic layer yielded 1.972 grams of salicylic acid. Assuming the student was efficient and did not lose any material, what is the distribution coefficient (Kd) for the system ? let Kd = (concentration in organic solvent) / (concentration in aqueous solvent) a....