We need at least 10 more requests to produce the answer.
0 / 10 have requested this problem solution
The more requests, the faster the answer.
Before adding a sample or solvent to a separatory funnel, what should you have in place? Select one or more:
6. You have two layers in a separatory funnel, an aqueous and an organic. If you don't know the densities of each of your aqueous and organic phases, what is one way to determine which is which?
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)...
You have a separatory funnel that contains a solution of 4-methyl benzoic acid and ethoxybenzene in methylene chloride. By adding KOH (aq) into this solution for extraction, what compound(s) would be expected to form in the aqueous layer? Write the equation. Compound X has a hexane/water distribution coefficient of 2.0. (a) Does compound X have a higher or lower solubility in hexane comparing to water? (b) How much of a 3.0 g sample of compound X dissolved in 100 ml...
2. When using the separatory funnel you may have observed a oily emulsion between the aqueous and DCM layers. What components of tea are responsible for this emulsion? How can one minimize the size of the emulsion layer? 3. How does adding the anhydrous sodium sulfate to the dichloromethane solution remove water? 4. If the above step was omitted in the isolation procedure, how would this be reflected in the yield of caffeine? 5. A student used 8.23 g of...
Post-Lab 3. You vigourously shake a separatory funnel, and notice an emulsion forming. What can you do to help break up the emulsion? 4. Complete the following acid-base reaction and provide the keq. Is sodium bicarbonate (NaHCO) a suitable base in this situation? + NaHCO, 5. A mixture of benzoic acid and a neutral nonpolar compound is dissolved in ether and mixed thoroughly with aqueous sodium bicarbonate. What is the organic chemical species that is present in the ether layer?...
2. What things should you do before accepting or rejecting a job offer? Place an x before each correct answer. Compare the salary offer to typical salaries for this job in your area Determine whether there is room for you to grow Decide whether this job a good fit for you Ask the interviewer what they think you should do Analyze the work-life balance the job provides
When the solution above has reached equilibrium, what effect would adding more Mg2+ have? Adding more F-? Why is it that NO MORE PRODUCT forms when more MgF2 is added to the solution at equilibrium?
On EMB agar containing E. coli, what should the colony morphology be? Select one or more: a. Shiny metallic green surface on colonies b. Fish eye colonies c. Dark, black colonies d. Beige, round colonies
The acquisition cost of the piece of equipment should be: Select one or more: O a. The fair value of the equipment. b. The cost of the equipment less the value expected to sell after 5 years use. O c. The cost of the equipment plus insurance of the first year use. d. The cost of the equipment plus tax, shipping cost and installation cost for it ready to use.
Vmware To receive alarm notifications you have to setup __________ Select one or more: A. SMTP parameters for email notifications. B. SNMP receiver for trap notifications. C. SNMP parameters for email notifications. D. SMTP receiver for trap notifications. E. Shared email account. F. Shared Cloud file storage.