Calculate the pH of a 0.069 M solution of an organic acid HA in water (pKa=...
Calculate the pH of a 0.069 M solution of an organic acid HA in water (pKa= 4.6). Present your answer as a numerical value only, to one decimal place, in the form x.xEx. Preliminary Note Although this is not applied in this question, the significant figures in logs (and therefore in pK's and pH's) are only counted after the decimal point. Thus pH values of 15.76, 5.76, 0.76 and 0.01 are all accurate to two significant figures. Answer:
Homework Answers
![Q. [HAJ: C = 0.06am pka 2406 Ka = 10-pka = 1046 = 2,512 x 10-5 HA - Hagst Acaq) c-ca . ca ca Ka LLLİ Ka = [HT][A] cd.ca os<](http://img.homeworklib.com/questions/2d6a8d00-c07f-11ea-b979-834936e8acae.png?x-oss-process=image/resize,w_560)
Add Answer to:
Calculate the pH of a 0.069 M solution of an organic acid HA in
water (pKa=...
The initial concentration of acid HA in solution is 1.7 M. If the pH of the...
The initial concentration of acid HA in solution is 1.7 M. If the pH of the solution at equilibrium is 2.20, what is the percent ionization of the acid? Round the answer to two significant figures.
The pH of a 0.23 M solution of acid HA is found to be 3.87. What...
The pH of a 0.23 M solution of acid HA is found to be 3.87. What is the Ka of the acid? The equation described by the Ka value is HA(aq) + H2O(l) <=> A-(aq) + H3O+ (aq) • Report your answer with two significant figures. Provide your answer below: K=0
2. The pH of a 0.100 M solution of an acid, HA, is 1.70. Calculate the...
2. The pH of a 0.100 M solution of an acid, HA, is 1.70. Calculate the K? (use ICE) Н А Р НА pH = 1.70 2.Show your work with units and correct significant figures for all questions that involve a calculation 1. Predict the expected pH ( <7, >7, =7) at the endpoint(s) of each of the three titrations. Explain your reasoning. a. Titration of a Strong Acid, HCl, with a Strong Base, NaOH Predicted pH (circle one): (a.)...
The initial concentration of acid HA in solution is 2.0 M. If the pH of the...
The initial concentration of acid HA in solution is 2.0 M. If the pH of the solution at equilibrium is 2.2, what is the percent ionization of the acid? Remember to report your answer with the correct number of significant figures Sorry, that's incorrect. Try again? [0.032]%
A 0.190 M solution of a weak acid (HA) has a pH of 2.91 Part A...
A 0.190 M solution of a weak acid (HA) has a pH of 2.91 Part A Calculate the acid ionization constant (K) for the acid, Express your answer using two significant figures. 10 Ad O ? K.- Submit Request Answer Provide Feedback
Use the titration curve for the weak acid to calculate the pH of a 0.150 M solution of that weak acid.
Use the titration curve for the weak acid to calculate the pH of a 0.150 M solution of that weak acid. Round the pKa to the nearest whole number for the calculation, and enter your answer for the pH to two significant figures. Match the provided labels to the appropriate point on the titration curve.
Constants I Periodic T A 0.120 M solution of a weak acid (HA) has a pH...
Constants I Periodic T A 0.120 M solution of a weak acid (HA) has a pH of 3.27 Part A You may want to reference (Pages 700 - 709) Section 16.7 while completing this problem Calculate the acid ionization constant (K.) for the acid. Express your answer using two significant figures. GI ΑΣΦ K- Submit Request Answer Provide Feedback Ne
Question 26 1 pts Calculate the pH of a 0.432 M (CH3)2NH2Br solution. Remember that only...
Question 26 1 pts Calculate the pH of a 0.432 M (CH3)2NH2Br solution. Remember that only the decimal places in a pH represent significant figures. Please enter your answer with three decimal places. Question 27 1 pts Calculate the pH of a 0.421 M KClO solution. Remember that only the decimal places in a pH represent significant figures. Please enter your answer with three decimal places.
Question 24 1 pts Calculate the pH of a 0.236 M solution of Sr(OH)2 Remember that...
Question 24 1 pts Calculate the pH of a 0.236 M solution of Sr(OH)2 Remember that a pH with three decimal places has three significant figures. Make sure to enter your answer with three decimal places. Question 25 1 pts Determine the pH at the equivalence point of a titration between 50.0 mL of 0.133 M (CH3)2NH solution with 0.133 MHCIO4. Remember that only the decimals in a pH count as significant figures. Please enter your answer with three decimal...
Calculate the percent ionization of HA in a 0.10 M solution. Express your answer as a...
Calculate the percent
ionization of HA in a 0.10 M solution. Express your answer as a
percent using two significant figures. View Available Hint(s)
nothing % Part B Calculate the percent ionization of HA in a 0.010
M solution. Express your answer as a percent using two significant
figures. View Available Hint(s)
pH and Percent Ionization of a Weak Base 20 of 22 > A Review Constants Periodic Table The degree to which a weak base dissociates is given by...
The pH of a 0.23 M solution of acid HA is found to be 3.87. What is the Ka of the acid? The equation described by the Ka value is HA(aq) + H2O(l) <=> A-(aq) + H3O+ (aq) • Report your answer with two significant figures. Provide your answer below: K=0
2. The pH of a 0.100 M solution of an acid, HA, is 1.70. Calculate the K? (use ICE) Н А Р НА pH = 1.70 2.Show your work with units and correct significant figures for all questions that involve a calculation 1. Predict the expected pH ( <7, >7, =7) at the endpoint(s) of each of the three titrations. Explain your reasoning. a. Titration of a Strong Acid, HCl, with a Strong Base, NaOH Predicted pH (circle one): (a.)...
The initial concentration of acid HA in solution is 2.0 M. If the pH of the solution at equilibrium is 2.2, what is the percent ionization of the acid? Remember to report your answer with the correct number of significant figures Sorry, that's incorrect. Try again? [0.032]%
A 0.190 M solution of a weak acid (HA) has a pH of 2.91 Part A Calculate the acid ionization constant (K) for the acid, Express your answer using two significant figures. 10 Ad O ? K.- Submit Request Answer Provide Feedback
Constants I Periodic T A 0.120 M solution of a weak acid (HA) has a pH of 3.27 Part A You may want to reference (Pages 700 - 709) Section 16.7 while completing this problem Calculate the acid ionization constant (K.) for the acid. Express your answer using two significant figures. GI ΑΣΦ K- Submit Request Answer Provide Feedback Ne
Question 26 1 pts Calculate the pH of a 0.432 M (CH3)2NH2Br solution. Remember that only the decimal places in a pH represent significant figures. Please enter your answer with three decimal places. Question 27 1 pts Calculate the pH of a 0.421 M KClO solution. Remember that only the decimal places in a pH represent significant figures. Please enter your answer with three decimal places.
Question 24 1 pts Calculate the pH of a 0.236 M solution of Sr(OH)2 Remember that a pH with three decimal places has three significant figures. Make sure to enter your answer with three decimal places. Question 25 1 pts Determine the pH at the equivalence point of a titration between 50.0 mL of 0.133 M (CH3)2NH solution with 0.133 MHCIO4. Remember that only the decimals in a pH count as significant figures. Please enter your answer with three decimal...
Calculate the percent
ionization of HA in a 0.10 M solution. Express your answer as a
percent using two significant figures. View Available Hint(s)
nothing % Part B Calculate the percent ionization of HA in a 0.010
M solution. Express your answer as a percent using two significant
figures. View Available Hint(s)
pH and Percent Ionization of a Weak Base 20 of 22 > A Review Constants Periodic Table The degree to which a weak base dissociates is given by...
Most questions answered within 3 hours.
-
The energy required to remove an electron from a surface of a
solid element is called...
asked 15 minutes ago -
How would you train your employees to avoid risks of using
mobile devices?
asked 38 minutes ago -
Assume Kw = 1.01 ✕ 10−14
For pure water, we can calculate [H3O+ ] = [OH...
asked 1 hour ago -
Suppose that on a temperature scale X, water boils at 203.0°X
and freezes at -105.7°X. What...
asked 2 hours ago -
BaS crystallizes in a cubic unit cell with S2- ions on each
corner and each face....
asked 2 hours ago -
A. 0≤P(Oi)≤10≤P(Oi)≤1 for each i
B. P(Oi)≤0P(Oi)≤0
C. P(Oi)=1+P(OCi)P(Oi)=1+P(OiC)
D. P(Oi)≥1P(Oi)≥1
If an experiment consists of...
asked 4 hours ago -
A battery has an emf of 9.20V and an internal resistance of 1.20
ohm. a)What resistance...
asked 4 hours ago -
The area of an elastic circular loop decreases at a constant
rate, dA/dt = −6.60×10−3 m2/s...
asked 5 hours ago -
The denaturation of proteins can be described by the
equilibrium
F⇌U
where F and U represent...
asked 7 hours ago -
Please answer what the maximum and minimum force is, and the
angle on the ion is...
asked 7 hours ago -
implement a program that reads a number of rows and a symbol.
The program will draw...
asked 7 hours ago -
Assume that when adults with smartphones are randomly selected,
45% use them in meetings or classes....
asked 7 hours ago