buozone x M Final exam in Science ds X Faculty of Science l Unive X C Chegg Stud
ID: 931444 • Letter: B
Question
buozone x M Final exam in Science ds X Faculty of Science l Unive X C Chegg Study I Guided sol x x x M Assignment 9 C ezto.mheducation.com 0.14127181715044668 14501 1078 1870 Apps N Netflix Member Lo... uozone M Sign In l McGraw-Hi... D Mat 341A YouTube to mp3 Co... Google Map D teaching subjects c... t Log in ITumblr Destiny Sanderson CHM1311 B Fall 2015: CHM1311 B Fall 2015 Assignment 9 instructions l help Question 1 of 7) Save & Ex Submit Time remaining: 2:26:54 3.00 points Question Assistance Be sure to answer all parts. View H What are the CH30 and the pH of a buffer that consists of 0.19 movL HF and View Qu 0.36 mol/L KF? (Ka of HF 6.8 x 10 4) Show Me Guided Solution Question Help Report a Problem ENG 33 AM Ask me anything US 2015-12-14Explanation / Answer
Use the Henderson Hasselbalch equation:
pH = pKa + log [S]/[HA]
pH = -log(6.8x10-4) + log (0.36/0.19)
pH = 3.17 + 0.28
pH = 3.45
[H3O+] = 10-3.45 = 3.55x10-4 M
Hope this helps.
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