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- Why is it bad to put too much water as the solvent when recrystillizing benzoic acid?methyl alcohol and ethyl alcohol are poor extraction solvent. why?105 100 95 75 0 1 2 3 4 5 67 8 9 10 11 12 13 14 15 16 17 18 19 20 Volume distillate collected (mL) 1. Indicate the volume of the distillate at which you should stop collecting to make sure that the distillate is only composed of one component. 2. Indicate the boiling point range involved in the collection of this amount of distillate. Temp in Still Head ("C)
- Suppose you have an organic sample X that is somewhat soluble in water, even though it issomewhat more soluble in dichloromethane or ether solvents. But if you do a singleextraction, you get only 60% of your material to transfer from the water to the organic layer.How many “washes” would it take to extract over 90% of your organic material extracted fromthe water layer?1) Outline the processes you would adopt to purity and test the purity of sodium benzoate, an active ingredient of most cosmetic products in the laboratory.If the antifreeze is composed is composed of 50% ethylene glycol sol'n? What will be the freezing & boiling temperatures of H2O in the presencce of ethylene glycoll.
- What is the purpose of including a melting point in a procedure? A) As a method of purification - We can purify a substance. B) As a method of encouraging synthesis - Reagents are always more reactive in the liquid state. C) As a method of encouraging a substance to dissolve - Free molecules in the liquid state can make interactions and dissolve in the solvent easier. D) As a method of characterization We can identify an unknown substance. -- O A OD(i) Why is an increase in temperature observed on mixing chloroform and acetone?(ii) Why does sodium chloride solution freeze at a lower temperature than water?1) outline the process you would adopt to purity and test the purity of sodium benzoate, an active ingredient of most cosmetic products in the laboratory.