CHM 2046 Lecture Notes - Lecture 17: Buffer Solution, Sodium Chloride, Sodium Hydroxide

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Published on 19 Jul 2019
University of Florida
CHM 2046
Did the PLA at like walmart basically…so answers still below just no explanation
Question 1
1 / 1 pts
Which of the following combinations produce a buffer solution? Select all that apply.
HNO2 and KNO2
HOCl and NaCl
HF and NaF
H2SO4 and Na2SO4
HClO4 and NaClO4
NH3 and (NH4)2SO4
HCN and LiCN
Question 2
1 / 1 pts
Look at sample problem 19.1 in the 8th ed Silberberg book. Write the equation for
the acid dissociation, write the Ka expression, solve for H+ concentration, then do an
ICE chart. Put the values into the Kaexpression (the one you solved for H+ and find
H+, convert to pH and input that to 2 decimal place. Or use the Henderson-
Calculate the pH of a buffer solution consisting of 0.31 M HA (Ka = 7.1 x 10-6) and
0.25 M NaA.
Question 3
1 / 1 pts
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