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These questions is regard to the accompany the stereoselective Wittig reaction. A) The procedure calls for the addition of 7-8 drops of aqueous NaOH. What is the purpose of the base here? Be specific and show the reaction that occurs. B) Why the switch in drying agents? Anhydrous sodium sulfate is both efficient and inexpensive. Potassium carbonate is less efficient and somewhat more costly. *Hint: Sodium sulfate is actually a wee bit acidic whereas potassium carbonate is a bit basic! Your product is an alkene. C) The mass of your crude product (as well as the tlc) should clue you in that an impurity if present. Whatever it is must also be soluble in dichloromethane, right? What is the probable identity of this impurity? At what point is it being removed?
what is the pressure when the volume of the gas is reduced to one-fifth of the original value at the same temperature?
when a 50.0-g nugget of pure gold is heated from 35.0 C to 50.o C, it absorbed 5200.0J of energy. find the specific heat of gold.
What is the molarity of a solution in which 2.69 g of C12H22O11 (MM=342.29 g/m) is dissolved in enough water to make 225 mL of solution?
A sample of a gas occupies 1470 mL at 60.7?C and 740 torr. What volume would it occupy at the same pressure and 450?C.
One brand of laundry bleach is an aqueous solution containing 4.00% sodium hypochlorite by mass.What is the molarity of this solution.
How much energy (in kilojoules) is required to convert 110 mL of diethyl ether at its boiling point from liquid to vapor if its density is 0.7138 ?
what is the name and formula for a compound with a composition percent of 77.7% Fe, 22.3% O and a molar mass of 71.85
Carbon and silicon belong to the same group and are known to have similar properties. Do you think that silicon can replace the role that carbon
How much ice (in grams) would have to melt to lower the temperature of 355 mL of water from 24 C to 6 C (Assume the density of water is 1.0g/ml.
How many joules are released when 6.94 moles of water cools from 100.0 degrees Celsius to 0.0 degrees Celsius?
calculate the energy lost when 75.0 g of water cools from 86.4 degrees celcius to 2.1 degrees celcius
If 32mL of 7.0M H2SO4 was spilled, what is the minimum mass of NaHCO3 that must be added to the spill to neutralize the acid?
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