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Consider the halide ions as nucleophiles. Briefly explain why F-, the strongest base among the halide ions, is the best nucleophile in polar aprotic solvents while iodide the weakest base is the best in protic solvents.
What is the pH of a solution that is 0.75M in sodium acetate and 0.5M in acetic acid (Ka for acetic acid is 1.85 * 10^-5
when a current of 308 mA is used for 8h, what volume of fluorine gas at 298 K and 1 atm can be produced from a molten mixture of potassium and hydrogen fluoride
2-methyl-2-butanol reacts with HBr to form 2-bromo-2-methyl butane and water while butanol reacts with HBr to form 1-bromobutane and water. Give a detailed explanation as to why the 2-methyl-2-butanol forms a carbocation in the mechanism while but..
A 1.20 sample of dry ice is added to a 745 mL flask containing nitrogen gas at a temperature of 25.0 C and a pressure of 735mmHg .
The solution is titrated with a solution of sodium thiosulphate, starch solution being added near the endpoint. 29.8cm^3 of thiosulphate are required. Calculate the concentration of the thiosulphate solution.
a 100ml reaction vessel intially contains 2.60x10-2 moles of no and 1.30x10-2 moles of h2. at equilibrium the
Chemical Structure and Hydrogen Bonds in Base Pairs, Draw the chemical structure of a correctly base paired G-C pair, then re-draw the pair with a propeller twist these answers should all be on one page following box G.
Standard Temperature and Pressure of Chlorine, Chlorine is widely used to purify municipal water supplies and to treat swimming pool waters. Suppose that the volume of a particular sample of Cl2 gas is 8.70 L at 895 torr and 240C.
Why does dropwise addition of acetophenone to a grignard reagent warrant precautions in lab?
Furthermore, by carefully monitoring the volume change it is determined that 92kJ of work is done on the mixture during the reaction. Calculate the change of energy of the gas mixture during the reaction in kJ.
A 0.160-mole quantity of NiCl2 is added to a liter of 1.20 M NH3 solution. What is the concentration of Ni2 ions at equilibrium. Assume the formation constant* of Ni(NH3)62 is 5.5 × 108.
A 2.5M solution of hydrocyanic acid has a measured pH of 4.5. Calculate the Ka for hydrocyanic acid and its % dissociation.
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