Effect of ionic strength on pKa. Ka for the H2PO4- /HPO24- buffer is If you mix a
Question:
If you mix a 1:1 mole ratio of H2PO-4 and HPO42- at 0 ionic strength, the pH is 7.20. Using activity coefficients from Table 7-1, calculate the pH of a 1:1 mixture of H2PO-4 and HPO24- 2 at an ionic strength of 0.10. Remember that pH = - logAH = - log [H+] γH.
Transcribed Image Text:
HPOİ 10 Ka = [H.POx]านวุโ04
Fantastic news! We've Found the answer you've been seeking!
Step by Step Answer:
Answer rating: 50% (14 reviews)
To find pH rearrange the Ka expression to solve for the ...View the full answer
Answered By
Muhammad Umair
I have done job as Embedded System Engineer for just four months but after it i have decided to open my own lab and to work on projects that i can launch my own product in market. I work on different softwares like Proteus, Mikroc to program Embedded Systems. My basic work is on Embedded Systems. I have skills in Autocad, Proteus, C++, C programming and i love to share these skills to other to enhance my knowledge too.
3.50+
1+ Reviews
10+ Question Solved
Related Book For
Question Posted:
Students also viewed these Chemical Engineering questions
-
Find the pH and composition of saturated CaSO4 in water, considering Reactions 7-23 to 7 27 and using Davies activity coefficients. Suggested procedure: Use activity coefficients in all equilibrium...
-
Considering the following pKa values,31 explain why dilute sodium methoxide (NaOCH3) and sodium ethoxide (NaOCH2CH3) are leveled to the same base strength in aqueous solution. Write the chemical...
-
The 0.025 0 m KH2PO4/0.025 0 m Na2HPO4 buffer (6) in Table 14-3 has a pH of 6.865 at 25C. (a) Show that the ionic strength of the buffer is = 0.100 m. (b) From the pH and K2 for phosphoric acid,...
-
How do standard costs illustrate the trade-off between decision making and control?
-
On January 1, 2014, Vahsholtz Corporation purchased 5,000 shares of treasury stock. Other information regarding Vahsholtz Corporation is provided shown below. Compute (a) Return on common...
-
What is meant by empirical study in economics?
-
For a random sample of n = 49, find the probability of a sample mean being less than 37.2 when = 38 and = 2.17. The population mean and standard deviation are given. Find the indicated probability...
-
John Ingles has provided you with the following information related to his various investment holdings as of December 31, 2012. Interest earned on joint bank account with his spouse (spouse...
-
A colleague claims that the flow resistance (shear stress) of channel surfaces can be neglected in the analysis of rapidly varied flow but should be considered in the analysis of gradually varied...
-
1. From what you have read, how does Mr. Ma fit the profile of an entrepreneur? 2. What are the reasons for Mr. Mas success when so many others have failed (particularly in the food service...
-
(a) Calculate the pH of a solution prepared by mixing 0.0100 mol of the base B (Kb = 10 = - 2.00) with 0.020 0 mol of BH+Br- and diluting to 1.00 L. First calculate the pH by assuming [B] = 0.0100...
-
Systematic treatment of equilibrium. The acidity of Al3+ is determined by the following reactions. Write the equations needed to find the pH of Al(ClO4)3 at a formal concentration F. 2 + 2H20-Al(...
-
Describe how the lower of cost and net realizable standard is applied to inventory under IFRS.
-
The 200-g billiard ball is moving with a speed of 2.2 m/s when it strikes the side of the pool table at A. The coefficient of restitution between the ball and the side of the table is e=0.6. Neglect...
-
A man drove 5 km east, 5 km north and 7 km east. What is the magnitude of the man's displacement? (1) 12 km (2) 13 km (3) 17 km (4) 10 km
-
1.Mercury has both a surface gravitational field strength and a diameter 0.38 times the corresponding Earth values. Determine Mercury's mass [5A]
-
muy Question A7 A mass of 250 kg is suspended vertically from the ceiling via a steel bar of 2 metres length, and uniform circular cross-section of 6 mm diameter. Assuming that that g = 9.8 m/s and...
-
A gardener is using a tool as shown in the figure to pull weeds. 6.0 cm 24 cm You will notice that the tool is designed with a built-in pivot point about which the torques are applied. If the...
-
Richard is considering relocating to an assisted living facility. He learns that there is an initial community fee of $2250 and a monthly charge of $3380 for level-one care. Write an equation that...
-
Data 9.2 on page 540 introduces the dataset Cereal, which includes information on the number of grams of fiber in a serving for 30 different breakfast cereals. The cereals come from three different...
-
A solution containing 20.0 mL of 1.00 10 -3 M Co 2+ in the presence of 0.10 M C 2 O 4 2- at pH 9.00 was titrated with 1.00 10 -2 M EDTA. Using formation constants from Appendix I for Co(C 2 O 4 )...
-
Iminodiacetic acid forms 2:1 complexes with many metal ions: A 25.0 mL solution containing 0.120 M iminodiacetic acid buffered to pH 7.00 was titrated with 25.0 mL of 0.050 0 M Cu 2+ .Given that x2...
-
Auxiliary complexing agent. Use the equation derived in Problem 11-19. (a) Prepare a spreadsheet to reproduce the 20-, 50-, and 60-mL points in the EDTA titration of Zn 2+ in the presence of NH 3 in...
-
calculate the payback period, internal rate of return, and net present value of the proposed mine
-
Home Furnish has bonds on the market with 13 years to maturity and a yield to maturity of 8.5.In the financial newspaper, Home Furnish bonds is quoted as 127.223% of par value. The bonds make...
-
You need to choose between the following two design projects: year Cash flow A cash flow B 0 -$81,000 -$21,800 1 38,600 12,200 2 38,600 12,200 3 38,600 12,200 a) If the required return is 10 percent...
Study smarter with the SolutionInn App