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Problem- You need to produce a buffer solution that has a pH of 5.16. You already have a solution that contains 10 mmol (millimoles) of acetic acid. How many millimoles of acetate (the conjugate base of acetic acid) will you need to add to this solution? The pK of acetic acid is 4.74.
State your answer numerically in millimoles.
write the overall equation for the reaction b. Give a detailed reaction mechanism for the reaction showing all steps and intermediates
1g soil has been spiked with 0.1ml of 100 ppm (v/v) trimethylbenzene and subsequently extracted with 250 mL pentane. The extract is then measured with GC-FID.
A compound is 42.9% C, 2.4% H, 16.7% N, and 38.1% O, by mass. Addition of 6.00 grams of this compound to 50.0 ml benzene, C6H6 (d = 0.879 g/mL), lowers the freezing point from 5.53 to 1.37 degrees celsius. What is the molecular formula of this com..
What are the direction and magnitude of the velocity of plane 1 relative to plane 2? What is the Degrees? ° north of east
After the addition of a large excess of acid (in comparison with the acid volume needed to reach the equivalence point) D) tell how many millileters of acid are required to reach the equivalence point
Use the equipartition theorem to estimate the constant-volume molar heat capacity of (a) I2, (b) CH4, (c) C6H6 in the gas phase at 25oC.
For a certain glass electrode, the selectivity coefficient for Na+ relative to H+ is 1.0 x 10-12. The electrode is calibrated with NBS standard buffers 6.86 and 9.18,
Suppose that, during an extraction, you lost track of which flask contained the aqueous layer. What could you do to determine which layer is which
When 0.8210g of naphthalene was burned in a calorimeter containing 1,000g of water, a temperature rise of 4.21 degree celcius was observed. What is the heat capacity of the bomb calorimeter excluding the water
Molecular compound Y2(g), has a bond energy of 750 kJ/mol, and the molecular compound XY(g) has a bond energy of 1500 kJ/mol. Using bond-energy information, calculate ?H for the following reaction:
Provide a stepwise mechanism for the reaction, showing all electron movement using the curved arrow convention. Sketch a qualitative energy level diagram for the mechanism labeling all relevant points.
How much energy would be required to melt 26 g of HCl at its melting point of -110.8 ?C?
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