![Phosphoric acid is a triprotic acid (Kal = 6.9 x 10-, K2 = 6.2 x 10 %, and Kj] = 4.8 x 10-1). (aq), which pK, value should be](http://img.homeworklib.com/questions/8f8e89b0-72e5-11ea-9a94-db9d6012d469.png?x-oss-process=image/resize,w_560)
Homework Answers
pKa (KH2PO4) = 7.21
p ka = - log Ka
mole of acid = 11.0 g KH2PO4/ 136.086 g/mol
=0.00808 Mole KH2PO4
Mole of salt = 21.0 g / 141.958841 g/mol
= 0.148 mole Na2H PO4
Now use Henderson-Hasselbach equation to calculate the pH:
pH = pKa + log[salt] / [acid]
pH =7.21 + log (0.148 /1.0 /00.808/1.0)
pH = 7.21 + log 18.3
pH = 7.21 + (1.26)
pH =8.47
Add Answer to:
Phosphoric acid is a triprotic acid (Kal = 6.9 x 10-, K2 = 6.2 x 10...
Phosphoric acid is a triprotic acid (Kal = 6.9 x 10-3, Ka2 = 6.2 x 10-8,...
Phosphoric acid is a triprotic acid (Kal = 6.9 x 10-3, Ka2 = 6.2 x 10-8, and Ka3 = 4.8 x 10-13). To find the pH of a buffer composed of H,PO, (aq) and HPO2 (aq), which pKa value should be used in the Henderson-Hasselbalch equation? O pK al = 2.16 OpKq2 = 7.21 O pK a3 = 12.32 Calculate the pH of a buffer solution obtained by dissolving 19.0 g of KH,PO4(s) and 30.0 g of Na, HPO4(s) in...
Phosphoric acid is a triprotic acid (K -69 x 10-M K2 - 6.2 x 10-M, and...
Phosphoric acid is a triprotic acid (K -69 x 10-M K2 - 6.2 x 10-M, and K = 48 x 10- M). To find the pH of a buffer composed of H, PO, (a) and HPO(a), which pk, value would you use in the Henderson- Hasselbalch equation? Opk1 = 2.16 Opka = 7.21 pk = 12.32 Calculate the pH of a buffer solution obtained by dissolving 24.0 KH PO(S) and 41:0g Na, HPO(s) in water and then diluting to 1.00L...
Ukesources LX Give Up? V Hint Check Answer tion 4 of 5 > Phosphoric acid is...
Ukesources LX Give Up? V Hint Check Answer tion 4 of 5 > Phosphoric acid is a triprotic acid (K,1 -6.9 x 10,K2 = 6.2 x 10-6, and K, -4.8 x 10-1). To find the pH of a buffer composed of H,PO, (aq) and HPO- (aq), which pK, value should be used in the Henderson-Hasselbalch equation? OpK 1 = 2.16 OpK2 = 7.21 OPK 3 = 12.32 Calculate the pH of a buffer solution obtained by dissolving 21.0 g of...
Phosphoric acid is a triprotic acid 9x0 K 6.2 x 108, and Ki 4.8 x 10-13)...
Phosphoric acid is a triprotic acid 9x0 K 6.2 x 108, and Ki 4.8 x 10-13) To find the phi of a buffer composed of H, PO (ag) and HPO, (aq), which pk, valre should be used in the Henderson-Hasselbalch equation? pKai = 2.16 。pK2 = 7.21 О рКаз = 12.32 Calculate the pli of a buffer solution obtained by dissolving 10.0 g of KH,PO,(s) and 24.0 g of Na, HPO,(S) in water and then diluting to 1.00 L pH...
Phosphoric acid is a triprotic acid (Kai 6.9 x 10-3, K, -6.2 x 10-8, and Ks...
Phosphoric acid is a triprotic acid (Kai 6.9 x 10-3, K, -6.2 x 10-8, and Ks -4.8 x 10-13). To find the pH of a buffer composed of H,PO (aq) and HPO? (aq), which pK, value should be used in the Henderson-Hasselbalch equation? O pK,i 2.16 。pK2 7.21 〇pKg = 12.32 Calculate the pH of a buffer solution obtained by Jissolving 17.0 g of KH2PO,(8) and 33.0 g of Na, HPO,(s) in water and then diluting to 1.00 L pH...
Phosphoric acid is a triprotic acid ( K a1 = 6.9 × 10 − 3 M,...
Phosphoric acid is a triprotic acid ( K a1 = 6.9 × 10 − 3 M, K a2 = 6.2 × 10 − 8 M, and K a3 = 4.8 × 10 − 13 M ) . To find the pH of a buffer composed of H 2 PO − 4 ( aq ) and HPO 2 − 4 ( aq ) , which p K a value would you use in the Henderson–Hasselbalch equation? p K a1 = 2.16...
ent Score: 681/3200 Resources O Hint Check Answe on 16 of 32 Phosphoric acid is a...
ent Score: 681/3200 Resources O Hint Check Answe on 16 of 32 Phosphoric acid is a triprotic acid (K, 69x 10 , Kg-6.2 x 10- , and K3 = 4.8x 10-13). To find the pH of a buffer composed of H, PO (aq) and HPO (aq), which pK, value should be used in the Henderson-Hasselbalch equation? O pKal 2.16 OPK 7.21 O PK 12.32 Calculate the pH of a buffer solution obtained by dissolving 28.0 g of KH, PO, (s)...
Phosphoric acid is a triprotic acid (Kal 6.9x10-3, Ka2 6.2x 10-8, and Ka3 4.8x 10-3). To...
Phosphoric acid is a triprotic acid (Kal 6.9x10-3, Ka2 6.2x 10-8, and Ka3 4.8x 10-3). To find the pH of a buffer composed of H2PO4 (aq) and HPO4 (aq), which pKa value would you use in the Henderson-Hasselbalch equation? O pkat 2.16 O pKa2 7.21 рказ 12.32 Calculate the pH of a buffer solution obtained by dissolving 15.0 g of KH2PO4(s) and 25.0 g of Na2HPO4(S) in water and then diluting to 1.00 L Number pHL
Phosphoric acid is a triproccd (K 6.9x10-3, 6.2x10-8, and Ka3 4.8x 10-13). To find the pH of a buffer composed of H2PO4...
Phosphoric acid is a triproccd (K 6.9x10-3, 6.2x10-8, and Ka3 4.8x 10-13). To find the pH of a buffer composed of H2PO4 (aq) and HPO (aq), which pKa value would you use in the Henderson-Hasselbalch equation? O pK 1 = 2.16 O p 2=7.21 O pKa3 12.32 Calculate the pH of a buffer solution obtained by dissolving 11.0 g of KH2PO4(s) and 26.0 g of Na2HPO4(s) in water and then diluting to 1.00 L Number pH= |
Phosphoric acid is...
Phosphoric acid is a triproccd (K 6.9x10-3, 6.2x10-8, and Ka3 4.8x 10-13). To find the pH...
Phosphoric acid is a triproccd (K 6.9x10-3, 6.2x10-8, and Ka3 4.8x 10-13). To find the pH of a buffer composed of H2PO4 (aq) and HPO (aq), which pKa value would you use in the Henderson-Hasselbalch equation? O pK 1 = 2.16 O p 2=7.21 O pKa3 12.32 Calculate the pH of a buffer solution obtained by dissolving 11.0 g of KH2PO4(s) and 26.0 g of Na2HPO4(s) in water and then diluting to 1.00 L Number pH= |
Phosphoric acid is a triprotic acid (Kal = 6.9 x 10-3, Ka2 = 6.2 x 10-8, and Ka3 = 4.8 x 10-13). To find the pH of a buffer composed of H,PO, (aq) and HPO2 (aq), which pKa value should be used in the Henderson-Hasselbalch equation? O pK al = 2.16 OpKq2 = 7.21 O pK a3 = 12.32 Calculate the pH of a buffer solution obtained by dissolving 19.0 g of KH,PO4(s) and 30.0 g of Na, HPO4(s) in...
Phosphoric acid is a triprotic acid (K -69 x 10-M K2 - 6.2 x 10-M, and K = 48 x 10- M). To find the pH of a buffer composed of H, PO, (a) and HPO(a), which pk, value would you use in the Henderson- Hasselbalch equation? Opk1 = 2.16 Opka = 7.21 pk = 12.32 Calculate the pH of a buffer solution obtained by dissolving 24.0 KH PO(S) and 41:0g Na, HPO(s) in water and then diluting to 1.00L...
Ukesources LX Give Up? V Hint Check Answer tion 4 of 5 > Phosphoric acid is a triprotic acid (K,1 -6.9 x 10,K2 = 6.2 x 10-6, and K, -4.8 x 10-1). To find the pH of a buffer composed of H,PO, (aq) and HPO- (aq), which pK, value should be used in the Henderson-Hasselbalch equation? OpK 1 = 2.16 OpK2 = 7.21 OPK 3 = 12.32 Calculate the pH of a buffer solution obtained by dissolving 21.0 g of...
Phosphoric acid is a triprotic acid 9x0 K 6.2 x 108, and Ki 4.8 x 10-13) To find the phi of a buffer composed of H, PO (ag) and HPO, (aq), which pk, valre should be used in the Henderson-Hasselbalch equation? pKai = 2.16 。pK2 = 7.21 О рКаз = 12.32 Calculate the pli of a buffer solution obtained by dissolving 10.0 g of KH,PO,(s) and 24.0 g of Na, HPO,(S) in water and then diluting to 1.00 L pH...
Phosphoric acid is a triprotic acid (Kai 6.9 x 10-3, K, -6.2 x 10-8, and Ks -4.8 x 10-13). To find the pH of a buffer composed of H,PO (aq) and HPO? (aq), which pK, value should be used in the Henderson-Hasselbalch equation? O pK,i 2.16 。pK2 7.21 〇pKg = 12.32 Calculate the pH of a buffer solution obtained by Jissolving 17.0 g of KH2PO,(8) and 33.0 g of Na, HPO,(s) in water and then diluting to 1.00 L pH...
ent Score: 681/3200 Resources O Hint Check Answe on 16 of 32 Phosphoric acid is a triprotic acid (K, 69x 10 , Kg-6.2 x 10- , and K3 = 4.8x 10-13). To find the pH of a buffer composed of H, PO (aq) and HPO (aq), which pK, value should be used in the Henderson-Hasselbalch equation? O pKal 2.16 OPK 7.21 O PK 12.32 Calculate the pH of a buffer solution obtained by dissolving 28.0 g of KH, PO, (s)...
Phosphoric acid is a triprotic acid (Kal 6.9x10-3, Ka2 6.2x 10-8, and Ka3 4.8x 10-3). To find the pH of a buffer composed of H2PO4 (aq) and HPO4 (aq), which pKa value would you use in the Henderson-Hasselbalch equation? O pkat 2.16 O pKa2 7.21 рказ 12.32 Calculate the pH of a buffer solution obtained by dissolving 15.0 g of KH2PO4(s) and 25.0 g of Na2HPO4(S) in water and then diluting to 1.00 L Number pHL
Phosphoric acid is a triproccd (K 6.9x10-3, 6.2x10-8, and Ka3 4.8x 10-13). To find the pH of a buffer composed of H2PO4 (aq) and HPO (aq), which pKa value would you use in the Henderson-Hasselbalch equation? O pK 1 = 2.16 O p 2=7.21 O pKa3 12.32 Calculate the pH of a buffer solution obtained by dissolving 11.0 g of KH2PO4(s) and 26.0 g of Na2HPO4(s) in water and then diluting to 1.00 L Number pH= |
Phosphoric acid is...
Phosphoric acid is a triproccd (K 6.9x10-3, 6.2x10-8, and Ka3 4.8x 10-13). To find the pH of a buffer composed of H2PO4 (aq) and HPO (aq), which pKa value would you use in the Henderson-Hasselbalch equation? O pK 1 = 2.16 O p 2=7.21 O pKa3 12.32 Calculate the pH of a buffer solution obtained by dissolving 11.0 g of KH2PO4(s) and 26.0 g of Na2HPO4(s) in water and then diluting to 1.00 L Number pH= |
Most questions answered within 3 hours.
-
The free energy change for the following reaction at 25 °C, when
[Sn2+] = 1.17 M...
asked 45 minutes ago -
An MNE is this kind of industry when competition in one country
is essentially independent of...
asked 2 hours ago -
. For this set of questions, determine what
proportion of a normal distribution is located betweeneach...
asked 2 hours ago -
A college student is employed as a door-to-door newspaper
salesman. Historical data suggests that the student...
asked 3 hours ago -
MATLAB HW 11 problem using Switch Case and Input commands
Write a script file that calculates...
asked 3 hours ago -
Considering gravitational time dilation, calculate the time that
passes in Earth’s surface while 1 hour passes...
asked 4 hours ago -
Minitab Problem: Take the Lake Hume June rainfall data and find
use the processes outlined in...
asked 5 hours ago -
X Company is trying to decide whether to continue using old
equipment to make Product A...
asked 5 hours ago -
IN PYTHON ONLY !! Program 2: Re-work
program #5 (WeeklyHours) from the previous assignment such that...
asked 5 hours ago -
The average length of time between arrivals at a turnpike
toll-booth is 26 seconds. What is...
asked 7 hours ago -
(a) A piston at 6.1 atm contains a gas that occupies a volume of
3.5 L....
asked 8 hours ago -
Please answer true or false. Words
cannot be changed or added in to make it true...
asked 8 hours ago