Anthony Murri Edit profile details From: Anthony Murri (amurri9030@live.com) Sen
ID: 788836 • Letter: A
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Anthony Murri Edit profile details From: Anthony Murri (amurri9030@live.com) Sent: Tue 10/01/13 4:59 PM To: amurri9030@live.comA lot of points to whoever can help me complete my lab and show calculations...From: Anthony Murri (amurri9030@live.com) Sent: Tue 10/01/13 4:59 PM To: amurri9030@live.com
A. Preparation and standardization of NaOH
T1. T2. T3
a.) Weight of KHP, g - 0.520 0.510 0.505
b.) Vb (NaOH), L.- 28.20 27.28 27.06
c.) Molarity (NaOH). -
d.) Average Molarity (NaOH)-
e.) Deviation from average Molarity -
f.) Average Deviation-
g.) report M + or - D with correct sig figs-
(show the calculations for. Line C)
B. Determination of the concentration of an unknown weak acid using an indicator
T1 T2 T3
a.)Vb (NaOH), L- 5.31 4.80 5.00
b.)Molarity of unknown acid-
c.) Average Molarity of unknown acid-
d.) Deviation from average Molarity-
e.) Average Deviation-
f.) average Molarity + or - average deviation to correct sig figs-
(Show calculations of line B)
C. Determination of concentration, Ka and pKa of an unknown weak acid using a pH meter
1.) make a titration curve indicate the correct Ve/b the value of your pKa and how it was estimated. (I NEED THIS TO RECIEVE POINTS)
2.) Value of pKa and value of Ka
3.) pH of equivalence point from the titration curve:
(Results)
Base- PH-
1.1. 4.61
2 4.95
3 5.31
4 5.79
4.2 5.89
4.4 6.02
4.6 6.31
4.8 6.75
5.0 7.25
5.2 8.22
5.4 9.63
7.4 11.22
9.4 11.47
A lot of points to whoever can help me complete my lab and show calculations...From: Anthony Murri (amurri9030@live.com) Sent: Tue 10/01/13 4:59 PM To: amurri9030@live.com From: Anthony Murri (amurri9030@live.com) Sent: Tue 10/01/13 4:59 PM To: amurri9030@live.com From: Anthony Murri (amurri9030@live.com) Sent: Tue 10/01/13 4:59 PM To: amurri9030@live.com
A. Preparation and standardization of NaOH
T1. T2. T3
a.) Weight of KHP, g - 0.520 0.510 0.505
b.) Vb (NaOH), L.- 28.20 27.28 27.06
c.) Molarity (NaOH). -
d.) Average Molarity (NaOH)-
e.) Deviation from average Molarity -
f.) Average Deviation-
g.) report M + or - D with correct sig figs-
(show the calculations for. Line C)
B. Determination of the concentration of an unknown weak acid using an indicator
T1 T2 T3
a.)Vb (NaOH), L- 5.31 4.80 5.00
b.)Molarity of unknown acid-
c.) Average Molarity of unknown acid-
d.) Deviation from average Molarity-
e.) Average Deviation-
f.) average Molarity + or - average deviation to correct sig figs-
(Show calculations of line B)
C. Determination of concentration, Ka and pKa of an unknown weak acid using a pH meter
1.) make a titration curve indicate the correct Ve/b the value of your pKa and how it was estimated. (I NEED THIS TO RECIEVE POINTS)
2.) Value of pKa and value of Ka
3.) pH of equivalence point from the titration curve:
(Results)
Base- PH-
1.1. 4.61
2 4.95
3 5.31
4 5.79
4.2 5.89
4.4 6.02
4.6 6.31
4.8 6.75
5.0 7.25
5.2 8.22
5.4 9.63
7.4 11.22
9.4 11.47
A lot of points to whoever can help me complete my lab and show calculations...
A. Preparation and standardization of NaOH
T1. T2. T3
a.) Weight of KHP, g - 0.520 0.510 0.505
b.) Vb (NaOH), L.- 28.20 27.28 27.06
c.) Molarity (NaOH). -
d.) Average Molarity (NaOH)-
e.) Deviation from average Molarity -
f.) Average Deviation-
g.) report M + or - D with correct sig figs-
(show the calculations for. Line C)
B. Determination of the concentration of an unknown weak acid using an indicator
T1 T2 T3
a.)Vb (NaOH), L- 5.31 4.80 5.00
b.)Molarity of unknown acid-
c.) Average Molarity of unknown acid-
d.) Deviation from average Molarity-
e.) Average Deviation-
f.) average Molarity + or - average deviation to correct sig figs-
(Show calculations of line B)
C. Determination of concentration, Ka and pKa of an unknown weak acid using a pH meter
1.) make a titration curve indicate the correct Ve/b the value of your pKa and how it was estimated. (I NEED THIS TO RECIEVE POINTS)
2.) Value of pKa and value of Ka
3.) pH of equivalence point from the titration curve:
(Results)
Base- PH-
1.1. 4.61
2 4.95
3 5.31
4 5.79
4.2 5.89
4.4 6.02
4.6 6.31
4.8 6.75
5.0 7.25
5.2 8.22
5.4 9.63
7.4 11.22
9.4 11.47
A lot of points to whoever can help me complete my lab and show calculations...From: Anthony Murri (amurri9030@live.com) Sent: Tue 10/01/13 4:59 PM To: amurri9030@live.com A lot of points to whoever can help me complete my lab and show calculations... A. Preparation and standardization of NaOH Weight of KHP, g - Vb (NaOH), L.- Molarity (NaOH). - Average Molarity (NaOH)- Deviation from average Molarity - Average Deviation- report M + or - D with correct sig figs- Determination of the concentration of an unknown weak acid using an indicator Molarity of unknown acid- Average Molarity of unknown acid- Deviation from average Molarity- Average Deviation- average Molarity + or - average deviation to correct sig figs- Determination of concentration, Ka and pKa of an unknown weak acid using a pH meter make a titration curve indicate the correct Ve/b the value of your pKa and how it was estimated. Value of pKa and value of Ka pH of equivalence point from the titration curve:
A. Preparation and standardization of NaOH
T1. T2. T3
a.) Weight of KHP, g - 0.520 0.510 0.505
b.) Vb (NaOH), L.- 28.20 27.28 27.06
c.) Molarity (NaOH). -
d.) Average Molarity (NaOH)-
e.) Deviation from average Molarity -
f.) Average Deviation-
g.) report M + or - D with correct sig figs-
(show the calculations for. Line C)
B. Determination of the concentration of an unknown weak acid using an indicator
T1 T2 T3
a.)Vb (NaOH), L- 5.31 4.80 5.00
b.)Molarity of unknown acid-
c.) Average Molarity of unknown acid-
d.) Deviation from average Molarity-
e.) Average Deviation-
f.) average Molarity + or - average deviation to correct sig figs-
(Show calculations of line B)
C. Determination of concentration, Ka and pKa of an unknown weak acid using a pH meter
1.) make a titration curve indicate the correct Ve/b the value of your pKa and how it was estimated. (I NEED THIS TO RECIEVE POINTS)
2.) Value of pKa and value of Ka
3.) pH of equivalence point from the titration curve:
(Results)
Base- PH-
1.1. 4.61
2 4.95
3 5.31
4 5.79
4.2 5.89
4.4 6.02
4.6 6.31
4.8 6.75
5.0 7.25
5.2 8.22
5.4 9.63
7.4 11.22
9.4 11.47
Explanation / Answer
A) Line C] Molarity of NaOH (40.08g/1L) So M=(40.008/1)=(x/.0282) [If Vb is in mL] or (x/28.2) [If Vb is in L] which =1.128M [If mL] or 1128.226.... (I'm guessing you meant mL so from now on i'll be doing all calculations for mL's of NaOH)
(40.008/1)=(x/.02728)= 1.091M... (40.008/1)=(x/.02706)= 1.083M
B) Line B] {Again, assuming all is meant to be in mL and not L}
All you have to do is assume a 1:1 Molarity ratio since no weight of the acid/L is given, so, calculate the M of NaOH and then assume that the M of the acid is the same.
(40.008/1)=(x/[mL of NaOH for the test you are calculating M of the acid for]) Type the info in your calculator and you will have all this done in a few minutes.
Good luck on the rest of the lab!!!
P.S.) If the volume is supposed to be in Liters and not milliliters, then just multiply the end resuly of the molarities by 1000.
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