Multiple Choice
A 200.0-mL sample of the weak acid H3A (0.100 M) is titrated with 0.200 M NaOH. What are the major species at each of the following points in the titration? (Water is always assumed to be a major species.)
-After 350.0 mL of 0.200 M NaOH is added
A) A3-
B) HA2-, A3-
C) HA2-
D) OH-, A3-
E) H2A-, HA2-
Correct Answer:

Verified
Correct Answer:
Verified
Q2: Calculate the pH at the equivalence point
Q22: You have two salts, AgX and AgY,
Q129: The solubility, in moles per liter, of
Q131: In a solution prepared by adding excess
Q132: For ammonia, K<sub>b</sub> is 1.8 <font face="symbol"></font>
Q133: How many moles of Ca(NO<sub>3</sub>)<sub>2</sub> must be
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> =
Q138: The concentration of Mg<sup>2+</sup> in seawater is