Caffeine (C8H10N4O2) is a weak base with a pKb of 10.4. |
Calculate the pH of a solution containing a caffeine concentration of 460 mg/L . Express your answer to one decimal place. |
Caffeine (C8H10N4O2) is a weak base with a pKb of 10.4. Calculate the pH of a...
Caffeine (C8H10N4O2) is a weak base with a pKb of 10.4. Calculate the pH of a solution containing a caffeine concentration of 156 mgL−1 . Express your answer to one decimal place.
Caffeine (C8H10N4O2) is a weak base with a pKb of 10.4. Part A Calculate the pH of a solution containing a caffeine concentration of 281 mgL−1 . Express your answer to one decimal place.
Caffeine (C8H10N4O2) is a weak base. The pH of a caffeine concentration of 455 mg/L is found to be 7.48. Calculate the pKb of the solution.
Amphetamine (C9H13N) is a weak base with a pKb of 4.2. Calculate the pH of a solution containing an amphetamine concentration of 240 mg/L . Express your answer to one decimal place.
Amphetamine (C9H13N) is a weak base with a pKb of 4.2. Calculate the pH of a solution containing an amphetamine concentration of 230 mg/L . Express your answer to two decimal places.
Part A) Amphetamine (C9H13N) is a weak base with a pKb of 4.2. Calculate the pH of a solution containing an amphetamine concentration of 205 mg/L. Express your answer to two decimal places. Part B) Find the pH of a 0.150 M solution of a weak monoprotic acid having Ka= 0.20. Express your answer to two decimal places. B2) Find the percent dissociation of this solution. Express your answer using two significant figures.
1) The pH of an aqueous solution of 0.442 M caffeine (a weak base with the formula C8H10N4O2) is ______ 2) The hydroxide ion concentration, [OH-], of an aqueous solution of 0.442 M diethylamine (a weak base with the formula (C2H5)2NH) , Kb = 6.9×10-4, is: [OH-] = ________ M.
The pH of an aqueous solution of 0.462 M caffeine (a weak base with the formula C8H10N4O2) is
Morpholine (C4H.NO) is a weak organic base with pKb = 5.68. Part A Calculate the pH in a 1.00x10-2 M morpholine solution. Express your answer using three decimal places. VO AP o 2 ? Submit Request Answer Part B Calculate the the concentration of C4H.NO in a 1.00x10-2 M morpholine solution. Express your answer to two significant figures and include the appropriate units. Value Units Submit Request Answer Part C Calculate the the concentration of HC4H,Not in a 1.00×10-2 Mmorpholine...
Caffeine, C8H10N4O2is a weak base. Determine the value of Kbfor caffeine if a solution at equilibrium has [C8H10N4O2] = 0.050M, [C8H10N4O2H+] = 5 x 10-3 M, and [OH-] = 2.5 x 10-3M C8H10N4O2(aq) + H2O(l) ⇌ C8H10N4O2H+(aq) + OH-(aq)