443 3.79 pH of half-neutralized acid solution [H*] in half-neutralized solution K for unknown acid Unknown number D. Demonstration of Buffering Action 3,80 pH after addition of NaOH change in pH from Part C

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2req #3 w 20 חי E D An aqueous solution contains 0.315 M ammonia. Calculate the pH of the solution after the addition of 1.58x102 moles of nitric acid to 125 mL of this solution. (Assume that the volume does not change upon adding nitric acid). pH = C Submit Answer $ 4 R F Reminders 28 07 de % 5 V Use the References to access important values if needed for this question. Retry Entire Group 5 more group attempts remaining T G 6 B Y Ⓡ H & ve 7 tv U N A * 00 8 J A I M ( 9 K A O ) 0 < o 1 36 7 L W P Email Instructor A Previous LO CA : I V 11 + [ Next Save and Exit O 11 I 1

HE154 S20 Ch17 Sec7-9 Later iCloud Preferences... r Practice 17.12- Enhanced - with Feedback • Part A Find the [OH-] of a 0.50 M pyridine (C5 H5N) solution. (The value of K for pyridine (C5 H,N) is 1.7 x 10-9.) Express your answer to two significant figures and include the appropriate units. НА [ОН ]- Value Units %3D Submit Request Answer v Part B Find the pH of a 0.50 M pyridine (C5 H5N) solution.

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