Multiple Choice
Calculate the pH of a buffer that is 0.060 M HF and 0.030 M KF.The Ka for HF is 3.5 × 10-4.
A) 2.06
B) 4.86
C) 3.16
D) 3.56
E) 3.76
Correct Answer:
Verified
Correct Answer:
Verified
Q55: A sample contains Ca<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub>,<sub> </sub>HgS,AgCl,NH<sub>4</sub>Cl,and MnS.Identify the
Q56: Calculate the pH of a buffer that
Q57: Which of the following acids (listed with
Q57: Formic acid (HCO<sub>2</sub>H,K<sub>a</sub> = 1.8 × 10<sup>-4</sup>)is
Q58: Calculate K. AgI(s)⇌ Ag<sup>+</sup>(aq)+ I<sup>-</sup>(aq)K<sub>sp</sub> = 8.5
Q60: A 1.00 L buffer solution is 0.150
Q61: A sample contains Ba<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub>,<sub> </sub>HgS,AgCl,NH<sub>4</sub>Br,and CoS.Identify the
Q62: A solution contains 2.2 × 10<sup>-3</sup><sup> </sup>M
Q64: A 400.0 mL sample of 0.10 M
Q137: What is the [CH<sub>3</sub>CO<sub>2</sub>-]/[CH<sub>3</sub>CO<sub>2</sub>H] ratio necessary to