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Problem- Calculate the pH of the following mixture of acids: 100 mL solution containing 65 mL of 0.500 M acetic acid (CH3COOH - Ka = 1.8 x 10-5) and 35 mL of 0.300 M benzoic acid (C6H5COOH - Ka = 6.3 x 10-5).
Please take care to answer the question as mark are equally granted for each point
Problem- A sample of liquid copper required 254 kJ to vaporize the sample. Calculate the mass of copper vaporized. The heat of vaporization of copper is 4.81 kJ/g.
Bearing in mind the Jahn-Teller theorem, rank the following compounds in terms of their degree of deviation from idealized octahedral structure- [Cr(CN)6]4-, [Cu(H2O)6]2+, and [Cr(H20)6]3+
Problem- Show how free-radical halogenation might be used to synthesize the following compounds. In each case, explain why we expect to get a single major product.
Charge is carried from one electrode to the other by metal atoms passing through the solution e. none of the listed choices are correct
A 100.0ml of sample of drinking water was buffered at PH 10.0 and after the addition of Calmagite indicator, required 35.41ml of 4.652X10^-3 m EDTA to reach the end point for the titration. Calculate the total hardness of the water in ppm of CaCO3
Fischer projections, isomers, enantiomers and stereocenters, For 2,3-butanediol, there are 3 isomers; 2 are enantiomers, one is not.
Which of the following species is present in the greatest concentration in a 0.100 M H2SO4 solution in H2O
When Heated, KClO3 decomposes into KCl and O2. 2KClO3 arrow 2KCl+3O2 If this reaction produced 25.8 g of KCl, how much O2 was produced (in grams)
Initially, a gas occupies 45.4L at STP. What volume of gas (in L) will be occupied if the temperature increases to 49oC and a new pressure of 0.54 atm
Napthalene has a log Kow of 3.33. Estimate its soil-water partition coefficient normalized to organic carbon.
After labeling the molecule with a fluorescent tag it become clear that it is moving. To examine this you plot the average displacement squared versus time. How would you interpret the following results? In general terms, can you give a physical e..
Explain how much energy is contained in 1 mol of the following: λ- ray photons with a wavelength of 2.60 * 10-5 nm? Express answer in kJ/mol
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