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show all work for a and b please
Question 2: Polyprotic acids: a) equivalents of NaOH...
Please help!! Histidine is a polyprotic acid. 1. Draw a complete titration curve assuming 10.0 mL...
Please help!! Histidine is a polyprotic acid. 1. Draw a complete titration curve assuming 10.0 mL 0.10 M acid is titrated with 0.10 M NaOH. Calculate the pH at 0.10 mL intervals of base added until you have titrated all the acidic groups and added 2.0 mL of excess base. Plot the titration curve. Use the equations explained in the handout. 2. Plot the buffer capacity as explained in the handout. Explain which pH regions have the highest buffer capacity...
Question 8 For the polyprotic acid histidine (HisH3), the hydrogens in bold can be lost. When...
Question 8 For the polyprotic acid histidine (HisH3), the hydrogens in bold can be lost. When HisH3t is titrated w to reach the second pka? Another way of asking this is when presented with a titration curve of Hisha A. 45 ml B. 37.5 mL C. 30 mL OD. 15 mL E. 22.5 mL Question 8 121 O points Save Answer with NaOH and it takes 45.0 mL to remove all protons possible. In the titration curve, how many mL...
Please here is my lab questions for titration of weak acid. The questions are very short....
Please here is my lab questions for titration of weak acid. The
questions are very short. You have to determine the answers by just
looking at the graph based on the data points. Please give me the
answers of all of them. I would really appreciate. Please calculate
the molar mass question #7 as well. It will be of great help to
me.
Mass of the unknown acid: 0.2grams
Concentration of NaOH = 0.0500M
Formuld Bal pH of weak acid...
help with #1 please 1) How many moles of NaOH would you need to neutralize 50.0...
help with #1 please
1) How many moles of NaOH would you need to neutralize 50.0 mL of 0.250M Acetic Acid? A student performs an aqueous titration between an unknown polyprotic acid with a known concentration of strong base. A pH vs. show multiple equivalency points. By performing a derivative on these data, the stud more easily determine 2) mL of NaOH graph yields quantitative information that a. ...the volume of strong acid required to attain the buffer regions. b..the...
12. (4 pts) Show the chemical equations for what happens when a) H30" and b) OH...
12. (4 pts) Show the chemical equations for what happens when a) H30" and b) OH are added to a HNO2 NaNO2 buffer t b. Offt Na NO,Natt tN 13. (4 pts) Below is a titration curve for titrating a weak acid with NaOH. Show on the graph by drawing how the pKa can be determined. What is the pK,? PKa-109 Ka PKat 109 CND 2244 4-0 kn 109 ka PtH-PKa 109 se 150 20 volume NadHaaded (m) 14. (6...
hi there! please solve and show all work :) A buffered solution contains 0.50 M acetic...
hi there! please solve and show all work :)
A buffered solution contains 0.50 M acetic acid (HC2H302, K = 1.8 x10-5) and 0.50 M sodium acetate (NaC2H302)- "15pts) Calculate the pH of the solution: Calculate the pH after adding 0.020 mol NaOH into 1.00L of the buffer solution: m (base )
can someone please me with checking our work for the chart and helping me with the missing ones. Also with question 4 a...
can someone please me with checking our work for the chart and
helping me with the missing ones. Also with question 4 and 5? Thank
You
Concentration of standardized NaOH Volume of acid used NaOH volume added before largest pH increase NaOH volume added after largest pH increase pH before the largest pll increase pH after the largest pH increase I HC HC,H,O, 0.100 M 0.100 M 10.0 ml. 10 ml 10.2 ml. 8.6 ml. 112 ml 100 ml 5.495...
please help >< Polyprotic acids have more than one proton to donate to water, therefore have...
please help ><
Polyprotic acids have more than one proton to donate to water, therefore have more than one equilibrium constant for proton donation. For phosphoric acid, there is a three-step equilibrium: H, PO +H,0 5 H2PO4 + H30* H,PO," +H,0 5 HPO - +H30* HPO 2- +,0 5 PO.- +,0* Kai = 7.11 x 10-3 Ka2 = 6.32 x 10-8 Ka; = 4.5 x 10-13 For all conjugate acid base pairs: K, XKK where K is for the reaction...
please explain and show work рон 0.000398 TOH Acid/Base/Neutral 2.1 110 4.21 2.- In the following...
please explain and show work
рон 0.000398 TOH Acid/Base/Neutral 2.1 110 4.21 2.- In the following reaction identify the acid and its conjugate base and the base and its conjugate acid: Acid 3.- Determine the hydrogen and hydroxide concentration, when we dissolve 0.50 moles of the AH in 250 mL of solution. (Hint consider that [H+] is small) pKaa. 6.5 4.25 c. 5.6 x=[H*) = a. 2.12 * 104 b. 1.06 * 102 c. 3.86 * 10-5 [OH--a. 1.08 *1010...
24A) 40mL of 0.2 M formic acid is titrated with a strong base (NaOH= 0.5 M). Determine the pH before any base has been...
24A) 40mL of 0.2 M formic acid is titrated with a strong base
(NaOH= 0.5 M). Determine the pH before any base has been added.
Please show steps and please explain why the answer is what it
is.
24B) The 40mL 0.2 M formic acid is titrated with a 6.0mL of
strong base. Here NaOH can be treated as a conjugate base and
formic acid is the acid.
please show steps and explain!
Us (24-25, Acid/base, aqueous equilibrium) 24A) (4...
Question 8 For the polyprotic acid histidine (HisH3), the hydrogens in bold can be lost. When HisH3t is titrated w to reach the second pka? Another way of asking this is when presented with a titration curve of Hisha A. 45 ml B. 37.5 mL C. 30 mL OD. 15 mL E. 22.5 mL Question 8 121 O points Save Answer with NaOH and it takes 45.0 mL to remove all protons possible. In the titration curve, how many mL...
Please here is my lab questions for titration of weak acid. The
questions are very short. You have to determine the answers by just
looking at the graph based on the data points. Please give me the
answers of all of them. I would really appreciate. Please calculate
the molar mass question #7 as well. It will be of great help to
me.
Mass of the unknown acid: 0.2grams
Concentration of NaOH = 0.0500M
Formuld Bal pH of weak acid...
help with #1 please
1) How many moles of NaOH would you need to neutralize 50.0 mL of 0.250M Acetic Acid? A student performs an aqueous titration between an unknown polyprotic acid with a known concentration of strong base. A pH vs. show multiple equivalency points. By performing a derivative on these data, the stud more easily determine 2) mL of NaOH graph yields quantitative information that a. ...the volume of strong acid required to attain the buffer regions. b..the...
12. (4 pts) Show the chemical equations for what happens when a) H30" and b) OH are added to a HNO2 NaNO2 buffer t b. Offt Na NO,Natt tN 13. (4 pts) Below is a titration curve for titrating a weak acid with NaOH. Show on the graph by drawing how the pKa can be determined. What is the pK,? PKa-109 Ka PKat 109 CND 2244 4-0 kn 109 ka PtH-PKa 109 se 150 20 volume NadHaaded (m) 14. (6...
hi there! please solve and show all work :)
A buffered solution contains 0.50 M acetic acid (HC2H302, K = 1.8 x10-5) and 0.50 M sodium acetate (NaC2H302)- "15pts) Calculate the pH of the solution: Calculate the pH after adding 0.020 mol NaOH into 1.00L of the buffer solution: m (base )
can someone please me with checking our work for the chart and
helping me with the missing ones. Also with question 4 and 5? Thank
You
Concentration of standardized NaOH Volume of acid used NaOH volume added before largest pH increase NaOH volume added after largest pH increase pH before the largest pll increase pH after the largest pH increase I HC HC,H,O, 0.100 M 0.100 M 10.0 ml. 10 ml 10.2 ml. 8.6 ml. 112 ml 100 ml 5.495...
please help ><
Polyprotic acids have more than one proton to donate to water, therefore have more than one equilibrium constant for proton donation. For phosphoric acid, there is a three-step equilibrium: H, PO +H,0 5 H2PO4 + H30* H,PO," +H,0 5 HPO - +H30* HPO 2- +,0 5 PO.- +,0* Kai = 7.11 x 10-3 Ka2 = 6.32 x 10-8 Ka; = 4.5 x 10-13 For all conjugate acid base pairs: K, XKK where K is for the reaction...
please explain and show work
рон 0.000398 TOH Acid/Base/Neutral 2.1 110 4.21 2.- In the following reaction identify the acid and its conjugate base and the base and its conjugate acid: Acid 3.- Determine the hydrogen and hydroxide concentration, when we dissolve 0.50 moles of the AH in 250 mL of solution. (Hint consider that [H+] is small) pKaa. 6.5 4.25 c. 5.6 x=[H*) = a. 2.12 * 104 b. 1.06 * 102 c. 3.86 * 10-5 [OH--a. 1.08 *1010...
24A) 40mL of 0.2 M formic acid is titrated with a strong base
(NaOH= 0.5 M). Determine the pH before any base has been added.
Please show steps and please explain why the answer is what it
is.
24B) The 40mL 0.2 M formic acid is titrated with a 6.0mL of
strong base. Here NaOH can be treated as a conjugate base and
formic acid is the acid.
please show steps and explain!
Us (24-25, Acid/base, aqueous equilibrium) 24A) (4...
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