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which is correct? please explain
Identify the predominant reaction taking place in the solution at point...
Given that the pKa for the half equivalence point is = 5.5, and the pKa of...
Given that the pKa for the half equivalence point is =
5.5, and the pKa of Acetic acid is 4.76, what is the percent
error?
Is 4.76 the accepted value?
and 5.5 the experimental?
and so...
|4.76-5.5| = -0.74
--------- ----- = 0.15546 ×100% = 15.55%
|4.76|
|4.76|
Please verify I am correct.
Vinegar Titration Curve / / 14.00 13.00 12.00 11.00 10.00 9.00 8.00 E 7.00 6.00 5.00 4.00 3.00 2.00 1.00 0.00 0.00 5.00 10.00 25.00 30.00...
I titrated sodium carbonate in a commercial soda sample with a strong acid, HCl, and it...
I titrated sodium carbonate in a commercial soda sample with a
strong acid, HCl, and it gave me two equivalence points in a
titration curve graph. What do these two equivalence points
mean?
Titration of Sodium Carbonate 12.00 10.00 8.00 6.00 4.00 2.00 0.00 0.00 5.00 30.00 35.00 40.00 10.00 15.00 20.00 25.00 Vol of Hydrochloric Acid, mL
284 Report Sheet . Determination of the Dissociation Constant of a Weak Acid 2.96 2.99 4.37...
284 Report Sheet . Determination of the Dissociation Constant of a Weak Acid 2.96 2.99 4.37 4.55 C. Determination of pKof Unknown Acid First determination Second determination ml NaOH pH ml NaOH pH 0.00 mL 0.00 mL 1.00 mL 2.00 mL 2.00 mL 4.00 mL 3.64 3.00 mL 6.00 ml 3.97 4.00 mL 7.00 ml 4.17 5.00 ml 8.00 mL 6.00 mL 9.00 ml. 7.00 mL 9.50 mL 4.61 8.00 ml 10.00 ml 4.71 9.00 mL 10.50 ml 4.85 10.00...
You are titrating 100.00 mL of 0.4200 M propanoic acid ( CH3CH2CO2H) with 1.000 M KOH...
You are titrating 100.00 mL of 0.4200 M propanoic acid ( CH3CH2CO2H) with 1.000 M KOH Find the pH at the following points during the titration. The Ka for propanoic acid is 1.34 x 105 15. (32 pts) a) 0.00 mL of 1.000 M KOH b) 10.00 mL of 1.000 M KOH c) 21.00 mL of 1.000 M KOH d) 42.00 mL of 1.000 M KOH e) 60.00 mL of 1.000 M KOH f) Circle the best indicator for this...
Enter the following data into the calculator and graph pH versus mL of NaOH added. At...
Enter the following data into the calculator and graph pH versus mL of NaOH added. At the endpoint you should see a rapid change in pH. Identify the two volumes on each side of the endpoint, and determine the color change of the indicator for the end point. Data Analysis Table Volume of NaOH Solution Added pH Color 0.00 mL 2.79 Clear 1.00 mL 3.99 Magenta then clear 2.00 mL 4.49 Magenta then clear 3.00 mL 4.99 Magenta then clear...
Please help. Need step by step instructions. Given: The excess returns of two stocks X and...
Please help. Need step by step instructions. Given: The excess returns of two stocks X and Y and a market portfolio M in the table below over the past 5 years: Year Stock X-Rf Stock Y-Rf Market M-Rf 2010 14.00% 13.00% 12.00% 2011 19.00% 7.00% 10.00% 2012 -16.00% -5.00% -12.00% 2013 3.00% 1.00% 1.00% 2014 20.00% 11.00% 15.00% What is the beta for Stock X and Stock Y?
i need help with questions for part b only please ZULU Acid-Base Titration (worksheet to be...
i need help with questions for part b only please
ZULU Acid-Base Titration (worksheet to be completed in pairs - dee via e-mail Thursday, April 2, 11:59 pm) Concentration of NaOH: 0.0993 mol/L Part A: The following data was obtained when a 20.00 mL sample of acetic acid was titrated with 0.0993 mol/L sodium hydroxide (NaOH). The indicator changed color when 18.90 mL of NAOH was added (highlighted below). pH pH Volume of Base (mL) 1.00 2.00 Volume of Base...
with these titrations can you help with the questions below? And for like number 2: is...
with these titrations can you help with the questions below? And
for like number 2: is it something like this? 0.2568 M x 0.1
ml/(14.25 + 14.25) ml and if it is i dont understand why its (14.25
+ 14.25) ml twice? can you possibly explain?
Titration curve for pH vs. volume of NaoH 12.00 10.00 6.00 2.00 0.00 10.00 25.00 30.00 35.00 40.00 45.00 15.00 20.00 0.00 5.00 Volume of 0.1906M NaoH (in mL) Appendix A1: Part 1: Titration...
i need to know where to mark fhe equivalence point ans half equivalence point on my...
i need to know where to mark fhe equivalence point ans half
equivalence point on my graph. i nedd to obtain the half
equivalence point that will be my pKa value of the unknow
acid.
PLEASE HELP
PH Vs Volume NaOH (mL) рн 0.00 5.00 20.00 25.00 10.00 15.00 Volume NaOH (mL) n of Pra Second determination of esta - Unbosa Bed Volume Nacht 3.18 3.56 3.89 3.00 4.12 5.00 6.00 1.00 4.54 4.65 4.85 4.98 9.00 10.00 5.19 5.40...
a. Fit a multiple regression model using all four independent variables. For “made in Japan” variable...
a. Fit a multiple regression model using all four independent
variables. For “made in Japan” variable create an indicator/dummy
variable with “not made in Japan” as the reference/baseline group.
Provide the equation of the fit line. Interpret the regression
model parameters in the context of the problem.
b. What proportion of variability in the dependent variable is
explained by the independent variables?
Please do on Excel.
Thanks
Made in Japan Yes Yes No No NO No No No No No...
Given that the pKa for the half equivalence point is =
5.5, and the pKa of Acetic acid is 4.76, what is the percent
error?
Is 4.76 the accepted value?
and 5.5 the experimental?
and so...
|4.76-5.5| = -0.74
--------- ----- = 0.15546 ×100% = 15.55%
|4.76|
|4.76|
Please verify I am correct.
Vinegar Titration Curve / / 14.00 13.00 12.00 11.00 10.00 9.00 8.00 E 7.00 6.00 5.00 4.00 3.00 2.00 1.00 0.00 0.00 5.00 10.00 25.00 30.00...
I titrated sodium carbonate in a commercial soda sample with a
strong acid, HCl, and it gave me two equivalence points in a
titration curve graph. What do these two equivalence points
mean?
Titration of Sodium Carbonate 12.00 10.00 8.00 6.00 4.00 2.00 0.00 0.00 5.00 30.00 35.00 40.00 10.00 15.00 20.00 25.00 Vol of Hydrochloric Acid, mL
284 Report Sheet . Determination of the Dissociation Constant of a Weak Acid 2.96 2.99 4.37 4.55 C. Determination of pKof Unknown Acid First determination Second determination ml NaOH pH ml NaOH pH 0.00 mL 0.00 mL 1.00 mL 2.00 mL 2.00 mL 4.00 mL 3.64 3.00 mL 6.00 ml 3.97 4.00 mL 7.00 ml 4.17 5.00 ml 8.00 mL 6.00 mL 9.00 ml. 7.00 mL 9.50 mL 4.61 8.00 ml 10.00 ml 4.71 9.00 mL 10.50 ml 4.85 10.00...
You are titrating 100.00 mL of 0.4200 M propanoic acid ( CH3CH2CO2H) with 1.000 M KOH Find the pH at the following points during the titration. The Ka for propanoic acid is 1.34 x 105 15. (32 pts) a) 0.00 mL of 1.000 M KOH b) 10.00 mL of 1.000 M KOH c) 21.00 mL of 1.000 M KOH d) 42.00 mL of 1.000 M KOH e) 60.00 mL of 1.000 M KOH f) Circle the best indicator for this...
i need help with questions for part b only please
ZULU Acid-Base Titration (worksheet to be completed in pairs - dee via e-mail Thursday, April 2, 11:59 pm) Concentration of NaOH: 0.0993 mol/L Part A: The following data was obtained when a 20.00 mL sample of acetic acid was titrated with 0.0993 mol/L sodium hydroxide (NaOH). The indicator changed color when 18.90 mL of NAOH was added (highlighted below). pH pH Volume of Base (mL) 1.00 2.00 Volume of Base...
with these titrations can you help with the questions below? And
for like number 2: is it something like this? 0.2568 M x 0.1
ml/(14.25 + 14.25) ml and if it is i dont understand why its (14.25
+ 14.25) ml twice? can you possibly explain?
Titration curve for pH vs. volume of NaoH 12.00 10.00 6.00 2.00 0.00 10.00 25.00 30.00 35.00 40.00 45.00 15.00 20.00 0.00 5.00 Volume of 0.1906M NaoH (in mL) Appendix A1: Part 1: Titration...
i need to know where to mark fhe equivalence point ans half
equivalence point on my graph. i nedd to obtain the half
equivalence point that will be my pKa value of the unknow
acid.
PLEASE HELP
PH Vs Volume NaOH (mL) рн 0.00 5.00 20.00 25.00 10.00 15.00 Volume NaOH (mL) n of Pra Second determination of esta - Unbosa Bed Volume Nacht 3.18 3.56 3.89 3.00 4.12 5.00 6.00 1.00 4.54 4.65 4.85 4.98 9.00 10.00 5.19 5.40...
a. Fit a multiple regression model using all four independent
variables. For “made in Japan” variable create an indicator/dummy
variable with “not made in Japan” as the reference/baseline group.
Provide the equation of the fit line. Interpret the regression
model parameters in the context of the problem.
b. What proportion of variability in the dependent variable is
explained by the independent variables?
Please do on Excel.
Thanks
Made in Japan Yes Yes No No NO No No No No No...
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