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Grignard Synthesis of malachite Green Find the theoretical yield for generation of Gringard reagent AND malachite green. Show calculation Here was the procudure: Weight out 200 mg of magnesium turnings and polish them thoroughly with the polishing cloth to expose fresh surface area. Quickly add them to the reaction flask along with 10 mL of THF and then clamp the round bottom to the condenser using Keck clamp. Dissolve 1.25 g of 4-bromo-N,N-dimethylaniline in 5 mL of dry THF in a dry centrifuge tube (you may also flame dry this if it was not oven-dried by the TA). Using a clean, dry disposable syringe fitted with a metal needle, draw up approximately 2 mL of the 4-bromo-N,N-dimethylaniline solution. Insert the syringe needle through the rubber septum of your reaction apparatus and add the solution to the magnesium turnings with gentle swirling. Do not allow the reaction to become too vigorous. Likewise, if the reaction appears to stop then applies some gentle heating and vigorous stirring until you have it going again. Once all the 4-bromo-N,N-dimethylaniline reagent has been added, add 1-2 mL of dry THF to the vial as a rinse.Hydrolysis: transfer the reaction solution to a 125 or 250 mL beaker and slowly add about 3.0 mL of 5% HCl solution dropwise to quench the reaction and to convert the adduct to product.
Calculate the value of heat of vaporization for this liquid Calculate the normal boiling point of this liquid.
for a certain change, the value of change in U is -2.37kJ. during the change the system absorbs 650 joules. how much work did the system do?
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Suppose a black-body chamber is constructed from 55.8 g (one mole) of iron and heated to 500 K. Classical theory and the observations of Dulong and Petit indicate that the total energy of vibration of iron atoms is 3RT per mole.
How much heat in is evolved or absorbed in the reaction of 2.28 grams of sodium ( Na) with water( H 2 O), express your answer in kilocalories?
A sample of H2SO4 contains 1.11 grams of H (1.01 g/mol). How many moles of H2SO4 (98.02 g/mol) are present?
A generic salt, AB, has a molar mass of 189 g/mol and a solubility of 6.10 g/L at 25 C what is the Ksp of this salt
equilibrium constant, Kp, for the reaction = 0.295 (at 400 degrees C.)then write the kp of the reaction and Calculate kc at 400 degree Celsius.
If 4.00 g of the unknown compound contained 0.133 mol of and 0.267 mol of H , how many moles of oxygen, O , were in the sample?
What is the value of work (w) when a piston of volume 0.2 L expands against an external pressure of 200 kPa to a volume of 3.4 L?
3AgNO3 + Na3PO4 --> Ag3PO4 + 3NaNO3 Silver nitrate and sodium phosphate are reacted in equal amounts of 200. g each. How many grams of silver phosphate are produced?
If 6.46 L of gaseous ethanol reacts with 16.1 L O2, what is the maximum volume of gaseous carbon dioxde produced
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