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A 0.01M solution of acid HAS, has a ka=1.6 x 10-10 and a concentration of NaAS of 1.29 x 10-3 molar; (a) what is the pH of this solution and (b) what is the pkb of the conjugate base of HAS?
Calculate the pH during the titration of 100.0 mL of 0.200 M HCl with 0.400 M NaOH. First what is the initial pH (before any NaOH is added
insulin is a protein that is used by the body to regulate both carbohydrate and fat metabolism. a bottle contains 475
CCl4 lowered the freezing point of the solvent by 5.40 K . Calculate the molar mass of the compound.
In an organic chemistry lab, why would you not simply oxidize p-toluidine with KMnO4 to make p-aminobenzoic acid if it would be a faster method than using multi-step organic synthesis
When acetic anhydride is dessolved in water it forms acetic acid according to the balanced chemical reaction. Calculate the theoretical yield (in grams of acetic acid, FW 60.05 g/mol) if 8.79mL of acetic anhydride
A lactic acid/lactate ion buffer solution contains 0.24 M HC3H5O3 and 0.82 M C3H5O3^-, respectively. The Ka value of lactic acid is 1.4*10^-4. Calculate the of this buffer. Express the pH numerically.
Phenol is a weak organic acid with Ka=1.0x10^-10. How many grams of phenol do you need to add to 500. mL of water to make a pH=5.75 solution
The Ksp value for copper(II) sulfide is 6.0 × 10 -37. What is the molar solubility of this compound?
There are two naturally occurring isotopes of bromine. 79Br has a mass of 78.9183 amu. 81Br has a mass of 80.9163 amu.
You dissolve 650.0 g of sugar (C12H22O11) in 726 mL of water. The density of wat is 1.00 g/mL.
Given a barometric pressure of 731.0mmHg , calculate the pressure of gas sample (b) as indicated by the manometer.
calculate the pH change when 25 mL HCl are added to 500 mL of a solution that is 0.10 M CH3COO-
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