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A solution with pH of 2.91 is prepared by dissolving 1g. of benzoic acid, HC7H5O2, a weak acid, in 350 ml of water. What is Ka of benzonic acid?
Outline a complet mechanistic sequence for the reaction of 2-bromoheptane with potassium 2-methyl-2-propoxide in 2-methyly-2-propanol solvent to form the three alkenes generated in the reaction
In the ground state of the Hydrogen atom the energy of the electron is E0 = -13.61 eV. What is the energy of the electron in the ground state of the He+ ion
How do you calculate the effective nuclear charge for ions Cl- and K+ assuming that the core electrons contribute 1.00 and the valence electrons contribute nothing to the screening process
the acid-dissociation constants of phosphoric acid h3po4 are ka1 7.5 times 10-3 ka2 6.2 times 10-8 and ka3 4.2 times
Estimate Keq for the following equilibria at 425 K. Note that H2O is present as a gas rather than as a liquid. R = 8.3149 J/(mol*K).
The density of the resulting solution is 1.12g/mol. What is the molarity of the solution?
The solubility of Ag2CO3 in water is 2.58e-4 moles in 2 liters at 25 degrees celcius. What is the value of Ksp for Ag2CO3
Eight open-chain isomeric alcohols have the formula C5H11OH. a. Draw the structural formula and write the IUPAC name for each of these alcohols. b. Indicate which of these isomers are primary, secondary, and tertiary alcohols.
For each reaction, identify the acid-base conjugate pairs. Then rank all reactions in order of increasing tendency for the reaction to go to completion (to the right).
Calculate the entropy change when 1.86 g of H2 reacts with O2 according to the reaction 2H2(g) + O2(g) ! 2H2O(l) at 298 K and 1 atm pressure.
For a 0.13 M solution of formic acid, HCOOH, the pH = 2.40. Calculate Ka for formic acid.
Aspirin is a monoprotic acid called acetylsalicylic acid. Its formula is HC9H7O4. A certain pain reliever was analyzed for aspirin by dissolving 0.431 g of it in water and titrating it with 0.0430 M KOH solution.
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