Here is the text from the image You prepare a buffer solution from 10.0 mL of 0.
ID: 547765 • Letter: H
Question
Here is the text from the image
You prepare a buffer solution from 10.0 mL of 0.100 M MOPS (3-morpholinopropane-1-sulfonic acid) and 10.0 mL of 0.085 M NaOH. Next, you add 1.00 mL of 1.17 × 10-5 M lidocaine to this mixture Denoting lidocaine as L, calculate the fraction of lidocaine present in the form LH .
MOPS Ka=6.3x10^-8
Lidocaine Kb = 8.7 × 10–7
2017 08:00 AM 0 32/4410/25/2017 1 1:21 AM Print Calculator und Periodic Table of 11 incormect pling Learning You prepare a buffer solution from (0oml df o,t0O M MOPS (S OH Next, you add 1.00 mL of 1.17 10 M lidocaine to this mixture Denoting lidocaine as Li calculate the fraction of lidocaine present in the form LH MOPS Ka 6.3 10-8 Number arc CH3 CH3 Lidocaine Ks = 8.7 x 10-7 Previous Check Answer Next Hint 47 XIExplanation / Answer
0.001 moles of MOPS buffer
0.00086 moles of NaOH
1.4 x 10^-4 moles of MOPS left to react with L
1.4 x10^-4/total volume =6.67 x 10^-3 M of MOPS
8.87 x 10^-7 moles of L/total volume=4.2 x 10^-5 M for L
HA + L--> A + LH
8.7 x 10^-7=x^2/(6.67 x 10^-3 M)(4.22 x 10^-5 M)
x=4.95 x 10^-7
4.95 x 10^-7/4.2 x 10^-5 M =1.17x 10-2
=.0117