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Consider the titration of 20. mL of 0.10 M oxalic acid (a weak diprotic acid). What volume (in mL) of 0.10 M solution of NaOH is needed to fully titrate the sample of acid?
The acid dissociation constant (Ka) of caffeineH+ is Ka = 0.25 M. If a cup of tea has a pH of 7.6, what should be the ratio of concentrations of caffeineH+ to unprotonated caffeine in the tea
If the product of the reaction were dissolved in water, what would be the color of the litmus for a litmus test? Explain. What is the product?
What differences are noticed when a acid or base is added to distilled water as compared to the buffer solutions
N-Phenylmaleimide, can act as a dienophile in the Diels-Alder reaction Draw the structure of the product that would be formed by the treatment of N-phenylmaleimide with
The normal freezing point of the unknown is 5.50C while the solution of naphthalene in the unknown solvent freezes at 1.16C. Explain what is the freezing point depression constant, Kf, of the unknown solvent? Put in 3 significant figures
A common practice in cooking is the addition of salt to boiling water (Kb = 0.52 °Ckg/mole). One of the reasons for this might be to raise the temperature
consider the gas phase decompositon reaction of 2nocl----gt 2no cl2. the concentrations of nocl and cl2 are plotted
why is the internal-standard method often used in plasma emission
Calculate the [H] and pH of a 0.0025 M butanoic acid solution. Keep in mind that the Ka of butanoic acid is 1.52 * 10-5. Use the method of successive approximations in your calculations.
question a solution is prepared by adding 1.75 mg of an unknown protein to enough water to make a 13.5 ml solution. the
When determining Keq for the Fischer esterification of benzoic acid with methanol, how will your calculation be affected if you lose crystals of benzoic acid on the filter paper during vacuum filtration?
A compound A has prominent infrared absorptions at 1050, 1786, and 1852 cm-1 and shows a single absorption in the proton NMR spectrum
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