1) A weak acid has KA = 8.49 x 10^{-4}. What is the pKB of its conjugate base? 2) A weak base has KB = 9.49 x 10^{-3}. What is the pKB of this base? 3) Consider a weak acid "HA". What is the percent...
A 25.0 mL sample of a 0.1900 M solution of aqueous trimethylamine is titrated with a 0.2375 M solution of HCl. Calculate the pH of the solution after 30.0 mL of acid have been added; pKb of (CH3)3N = If I have 1 liter of...
What is the pKb value for the base (B) titrated? How can you determine the concentration of solution after titration? What is titration? What equation can we use for titration problems? How to determine when to reach the equivalent point? How would H2O affect the molarity of a NaOH ...
What is the time value of money? A、Time is money. B、One yuan today is worth the same as one yuan a year from now. C、A certain amount of money held at present has more value than the equivalent money acquired in future. D、A certain amount of money acq
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NH{eq}_{3}{/eq} is a weak base (K{eq}_{b}{/eq} = 1.8 x 10{eq}^{-5}{/eq}) and so the salt NH{eq}_{4}{/eq}Cl acts as a weak acid. What is the pH of a solution that is 0.074 M in NH{eq}_{4...
HCL is a strong acidic component. It is abbreviated as hydrochloric acid. It is a colorless solution. It gives a pungent smell. In animal cells, it is the important gastric solution present in the stomach, which helps in the digestion of food substrates. Answer...
A 100 mL sample of ammonia has a pH of 11.76. What is the hydroxide ion concentration of this sample? Ammonia: Ammonia is an organic molecule composed of N and H atoms. It has a chemical formula of NH3. It is considered as a Bronsted-Lowry base as...
If in a lab you were told that the density of the "Dark Blue Solution" is 1.12 g/mL, what volume of this solution would weigh 280 mg? Laboratory Measurements: In a science laboratory, all the experiments have to be done with ...