Question 2 0/2 points A 0.200 M BSA solution has an absorbance of 0.100. What is...
Consider the titration of 0.100 L of 0.200 M ascorbic acid with 0.500 M NaOH. What is the pH at the endpoint of the titration? Enter your answer to two decimal places; for this question we can assume the 5% assumption is valid.
100. mL of 0.200 M AgNO3(aq) is mixed with 61 mL of 0.100 M Na2S(aq). Calculate the mass (in g) of any precipitate that is formed. Enter your answer to 2 decimal places or O if no precipitate forms.
Question 13 (5 points) o A solution of barium hydroxide is 0.125 M at 25 C. What are the concentrations of hydronium and hydroxide ions in the solution? Select all correct answers. 0.250 M OH 0.250 M H307 0.125 M H307 0.125 MOH 04.0× 10-14 M H₂O+ 0 4.0 × 10-14 MOH 8.0 x 10-14 MOH 08.0% 10-14 M H₂O
1. A solution has [HC7H5O2] = 0.100 M and [Ca(C7H5O2)2] = 0.200 M. Ka = 6.3 × 10-5 for HC7H5O2. The solution volume is 5.00 L. What is the pH of this solution after 5.00 mL 10.0 M HCl is added? 2. Which of the following solution(s) is a buffer? 100 mL of 0.1 M acetic acid mixed with 25 mL of 0.5 M NaOH 50 mL of 0.1 M acetic acid mixed with 25 mL of 0.05 M sodium...
1. A 0.100 M solution of a weak acid has a pH of 1.96. Calculate the [H3O+] in the solution. 2. Suppose you have a 0.100 M solution of a weak acid that has a pH of 2.07. Calculate the Ka for this acid. *Report your answer to 2 significant figures.
Can you please try to answer these four questions for me? Which solution would you expect to have the highest boiling point? 0.100 m Naci 0 0.100m CH3OH O 0.100 m MgCl2 O 0.100 m AICI: O pure water A calibration standard has a concentration of 0.250 M. It is found to have an absorbance of 1.256. An unknown solution has an absorbance of 0.875, what is it's molarity? Which solution would you expect to have the lowest boiling point?...
2. A solution of 0.40 M NISO, has an absorbance, X. If this solution is diluted to give a 0.1 M solution, answer the following: a. Will the absorbance of the 0.10 M solution decrease or increase? b. By what factor will the absorbance increase or decrease?
100. mL of 0.200 M AgNO3(aq) is mixed with 30 mL of 0.100 M Na2S(aq). Calculate the mass (in g) of any precipitate that is formed. Enter your answer to 2 decimal places or if no precipitate forms.
The pH of a solution prepared by mixing 63.7 mL of 0.125 M Mg(OH)2 and 254.1 mL of 0.125 M HCl is ________. Submit your answer in the following format: 2 decimal places (Example: 7.13) The pH of a solution prepared by mixing 63.7 mL of 0.125 M Mg(OH)2 and 254.1 mL of 0.125 M HCl is ________. Submit your answer in the following format: 2 decimal places (Example: 7.13)
A) a solution that is 0.510 M in pyridine (C5H5N) and 0.470 M in pyridinium chloride (C5H5NHCl) Express your answer using two decimal places. pH= B) a solution that is made by combining 55 mL of 5.0×10−2 M hydrofluoric acid with 125 mL of 0.11 M sodium fluoride Express your answer using two decimal places. pH= C) Calculate the percent ionization of 0.125 M lactic acid in a solution containing 8.5×10−3 M sodium lactate. D) A 75.0-mL volume of 0.200 M...