Multiple Choice
A 65.5-mL sample of 0.14 M HNO2 (Ka = 4.0 10-4) is titrated with 0.11 M NaOH. What is the pH after 26.8 mL of NaOH has been added?
A) 10.28
B) 7.00
C) 3.72
D) 2.91
E) 3.07
Correct Answer:
Verified
Correct Answer:
Verified
Q2: Calculate the pH at the equivalence point
Q22: You have two salts, AgX and AgY,
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
Q134: A 200.0-mL sample of the weak acid
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
Q140: A titration of 100.0 mL of 1.00