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(1) Show the step by step reaction mechanism for the SnAr2 reaction of 2,4-dinitrochlorobenzene and an amine.
(2) Explain why the nitro groups are important.
(3) The pKb of morpholine is 5.6. The pKb of piperidine is 2.9. Which would you expect to have the higher rate constant for Nucleophilic substitution? Why?
If you have 240.0 mL of water at 25.00 °C and add 100.0 mL of water at 95.00 °C, what is the final temperature of the mixture.
a sample of vinegar of 50 ml and density of sample 1.06 gml was diluted to 500 millilitres. titration of a 50 ml of
an 8.4 g ice cube is placed into 260 g of water. calculate the temperature change in the water upon the complete
A solution is prepared by mixing 0.0300 mol CH2Cl2 and 0.0500 mol of CH2Br2 at 25°C. Assuming the solution is ideal, calculate the composition of the vapor
For the reaction Fe(OH)2(s)+H2O2(aq) -> Fe(OH)3(s), the reduction reaction is H2O2 -> 3OH-. The book states that the O2 from the H2O2 has a -1 charge and the OH from the Fe(OH)3 is -2.
Describe at least four methods that could be used to attempt to separate the oil and water at home. Based on the four methods postulate which method would work better than the others.
15.0 grams of an unknown sugar was dissolved in water and the final volume of the solution was brought up to 1.00 L. The osmotic pressure of this solution was determined to be 2.44 atm at 25°C. Which of the sugars below was most likely the unknown..
Determine how much dolomitic lime(is an anhydrous carbonate mineral composed of calcium magnesium carbonate CaMg(CO 3 ) 2 ) is required to apply to raise the pH to 7.0?
25 g of a certain metal is heated in boiling water and then poured into 90 mL of water initially at 22.0oC. After the water has resumed a constant temperature.
How many minutes would be required to electroplate 25.0 g of manganese by passing a constant current of 4.8 A through a solution containing MnO4 -
For caffeine, the partition coefficient between methylene chloride and water is approximately 8. If you add the following to a separatory funnel - 10 g caffeine,
The bond angles in H3O+ are:? a) slightly less than 109.5o b) exactly 109.5o c) slightly less than 90o d) exactly 90o
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