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127 solutions

Weak Bases

Q. Nicotine, C10H14N2, is a weak base and has a Kb of 1.0 x 10-6. What is the pH of a 0.20 M solution of nicotine? For full credit, write out the reaction (C10H14N2 (aq) + H2O(l)  …), write out the I.C.E. table beneath it, write the equilibrium constant expression in terms of x, and solve, checking any assumptions (Since it is a basic solution, your pH should be >7).

Solved • Mar 31, 2020

Weak Bases

Q. A 75.0 mL volume of 0.200 M NH3 (Kb = 1.8 x 10^-5) is titrated with 0.500 M HNO3. Calculate the pH after the addition of 25.0 mL of HNO3. Express your answer numerically.

Solved • Mar 24, 2020

Weak Bases

Q. A 75.0-mL volume 0.200 M NH3 (Kb = 1.8 x 10^-5) is titrated with 0.500 M HNO3. Calculate the pH after the addition of 27.0 mL of HNO3. Express your answer numerically.

Solved • Feb 26, 2020

Weak Bases

Q. Determine the pH during the titration of 37.4 mL of 0.253 M diethylamine ((C2H5)2NH, Kb = 6.9×10^-4) by 0.253 M HBr at the following points. (Assume the titration is done at 25 °C.) Note that state symbols are not shown for species in this problem. (a) Before the addition of any HBr ??

Solved • Mar 17, 2020

Weak Bases

Q. The hydronium ion concentration of an aqueous solution of 0.359 M aniline (a weak base with the formula C6H5NH2) is ... [H3O+] = ______ M.

Solved • Mar 15, 2020

Weak Bases

Q. The pH of an aqueous solution of 0.432 M morphine (a weak base with the formula C17H19ON) is _____.

Solved • Mar 6, 2020

Weak Bases

Q. The hydronium ion concentration of an aqueous solution of 0.432 M quinoline (a weak base with the formula C9H7N) is ...

Solved • Mar 5, 2020