Multiple Choice
For ammonia, Kb is 1.8 10-5 . To make a buffered solution with pH 10.0, the ratio of NH4Cl to NH3 must be
A) 1.8 : 1.
B) 0.18 : 1.
C) 1 : 1.8.
D) 1 : 0.18.
E) none of these
Correct Answer:

Verified
Correct Answer:
Verified
Q2: Calculate the pH at the equivalence point
Q75: Consider the following information about the diprotic
Q128: What combination of substances will give a
Q129: The solubility, in moles per liter, of
Q131: In a solution prepared by adding excess
Q133: How many moles of Ca(NO<sub>3</sub>)<sub>2</sub> must be
Q134: A 200.0-mL sample of the weak acid
Q135: A 65.5-mL sample of 0.14 M HNO<sub>2</sub>
Q136: Calculate the solubility of Ag<sub>2</sub>SO<sub>4</sub> [K<sub>sp</sub> =
Q137: Calculate the solubility of Ca<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub>(s) (K<sub>sp</sub> =