The pH of a 0.49 M week acid is found to be 6.5. What is the...
The pH of a 0.49 M week acid is found to be 6.5. What is the Ka of the acid? Enter your answer in scientific notation using "e" instead of "×10^" (1.23×10-7 = 1.23e-7) and round to three sig figs.
Homework Answers
![PH = 6.5 [H + 1 = lo by • lo 6.5 [A-1 = 1 3,16 x 107 HA - nt ta- Ka = [HATI A-] [НА 1 (3. 16x107 ) = 0.49 2.046 10-13 2.04 0-](http://img.homeworklib.com/questions/c0dcce40-d5d1-11eb-bd8d-ddcd463d76a3.png?x-oss-process=image/resize,w_560)
What is the Kw of pure water at 51.4ºC if the pH is 6.78? Enter your...
What is the Kw of pure water at 51.4ºC if the pH is 6.78? Enter your answer in scientific notation using "e" instead of "×10^" (1.23×10-7 = 1.23e-7) and round to three sig figs. please show work
1) A 8.65 ⋅ 10-3 M solution of HClO4 is made. -What is the pH of...
1) A 8.65 ⋅ 10-3 M solution of HClO4 is made. -What is the pH of this solution? -What is the pOH of this solution? -What is the [OH-] in the solution? Record this answer in scientific notation using 3 sig figs. 2)A 4.23⋅10-2 M solution of NaOH is made. -What is the pOH of this solution? -What is the pH of this solution? -What is the [H+] in the solution? Record this answer in scientific notation using 3 sig...
A weak monoprotic acid, HA dissociates by 1.300 % and has a pH of 2.15. Calculate...
A weak monoprotic acid, HA dissociates by 1.300 % and has a pH of 2.15. Calculate the Ka value for the acid HA. Record your answer in scientific notation to 3 sig figs. Preview
*Remember to submit each part separately to avoid losing your work* A 0.100 M solution of...
*Remember to submit each part separately to avoid losing your work* A 0.100 M solution of an unknown acid, HA, is 3.87% ionized. Complete the following table, but instead of using the variable x, calculate the number values of each quantity and report these values to the correct number of significant figures. Fill in all of the cells. Include signs in the Change column to indicate a gain or loss of concentration. Do not include any units in your answers,...
What is the percent ionization of a 0.213 M acetic acid solution with a Ka =...
What is the percent ionization of a 0.213 M acetic acid solution with a Ka = 1.75×10−5? Round answer to 3 sig figs and do not include the percent sign. please show work
A 0.013 M solution of a weak acid (HA) has a pH of 4.38. What is...
A 0.013 M solution of a weak acid (HA) has a pH of 4.38. What is the K, of the acid? Ka = 10 (Enter your answer in scientific notation.)
A 0.100 M solution of an unknown acid, HA, is 1.47% ionized. Complete the following table,...
A 0.100 M solution of an unknown acid, HA, is 1.47% ionized. Complete the following table, but instead of using the variable x, calculate the number values of each quantity and report these values to the correct number of significant figures. Fill in all of the cells. Include signs in the Change column to indicate a gain or loss of concentration. Do not include any units in your answers, M is assumed. To enter values in scientific notation follow the...
A 1.26⋅10−21.26⋅10-2 M solution of NaOH is made. What is the pOH of this solution? What...
A 1.26⋅10−21.26⋅10-2 M solution of NaOH is made. What is the pOH of this solution? What is the pH of this solution? What is the [H+] in the solution? Record this answer in scientific notation using 3 sig figs.
Please explain. Answer is 4.90E-10. The pH of 0.255 M HCN is 4.95. What is the...
Please explain. Answer is
4.90E-10.
The pH of 0.255 M HCN is 4.95. What is the value of Ka for hydrocyanic acid, HCN? Enter your answer in exponential (E) format (sample 1.23E-4) without units. Selected Answer: 4.94E-10 Correct Answer: 4.90E-10 Answer range+- 1.0OE-12 (4.890E-10-4.910E-10)
A 0.048 M solution of an unknown weak acid, HA, has a pH = 2.75. What...
A 0.048 M solution of an unknown weak acid, HA, has a pH = 2.75. What is the hydrogen ion concentration of this solution? Answer in scientific notation and be sure to include your units. (Scientific notation: Ex. 2.4 x 103 = 2.4E3) HA(aq) + H+(aq) + A'(aq) Answer: A 0.048 M solution of an unknown weak acid, HA, has a pH = 2.75. What is the value of the acid dissociation constant, Ka? Answer in scientific notation. Answer: A...
A weak monoprotic acid, HA dissociates by 1.300 % and has a pH of 2.15. Calculate the Ka value for the acid HA. Record your answer in scientific notation to 3 sig figs. Preview
A 0.013 M solution of a weak acid (HA) has a pH of 4.38. What is the K, of the acid? Ka = 10 (Enter your answer in scientific notation.)
A 0.100 M solution of an unknown acid, HA, is 1.47% ionized. Complete the following table, but instead of using the variable x, calculate the number values of each quantity and report these values to the correct number of significant figures. Fill in all of the cells. Include signs in the Change column to indicate a gain or loss of concentration. Do not include any units in your answers, M is assumed. To enter values in scientific notation follow the...
Please explain. Answer is
4.90E-10.
The pH of 0.255 M HCN is 4.95. What is the value of Ka for hydrocyanic acid, HCN? Enter your answer in exponential (E) format (sample 1.23E-4) without units. Selected Answer: 4.94E-10 Correct Answer: 4.90E-10 Answer range+- 1.0OE-12 (4.890E-10-4.910E-10)
A 0.048 M solution of an unknown weak acid, HA, has a pH = 2.75. What is the hydrogen ion concentration of this solution? Answer in scientific notation and be sure to include your units. (Scientific notation: Ex. 2.4 x 103 = 2.4E3) HA(aq) + H+(aq) + A'(aq) Answer: A 0.048 M solution of an unknown weak acid, HA, has a pH = 2.75. What is the value of the acid dissociation constant, Ka? Answer in scientific notation. Answer: A...
Most questions answered within 3 hours.
-
which reagent CAN convert the glucose ring into a linear
chain?
a) HCl (aq)
b) H2CrO4...
asked 11 minutes ago -
USING MATLAB.
Design a program which uses a for…end loop to add 10 to
a variable...
asked 12 minutes ago -
The raft is made up of
ten 18 cm diameter logs, each with a length of...
asked 15 minutes ago -
Batteries are one of the major imports of the US from China.
Batteries cost 10 Yuan...
asked 31 minutes ago -
the
Kb of ammonia (NH3) at 25.0 C is 1.75 x 10-5. Calculate the pH of...
asked 38 minutes ago -
aluminum maker Alcoa has a beta of about 1.86, whereas Hormel
Foods has a beta of...
asked 48 minutes ago -
Hewtex Electronics manufactures two products, headsets and
electronic calculators, and sells them nationally to wholesalers
and...
asked 51 minutes ago -
PHP
Create an HTML Form that asks for a series of
personal information from the user,...
asked 42 minutes ago -
The cash account for American Medical Co. at April 30 indicated
a balance of $10,785. The...
asked 48 minutes ago -
Describe how to measure benefits, including specific examples of
clinical and financial benefits that can be...
asked 1 hour ago -
Costs associated with the manufacture of miniature
high-sensitivity piezoresistive pressure transducers is $74,000 per
year. A...
asked 1 hour ago -
Given the following information for Jane Cole complete schedule
D of 1040 through part III and...
asked 1 hour ago