ANALYTICAL CHEMISTRY - PLEASE I NEED HELP ASAP!
(Use significant figures and scientific notation)
Part A An aqueous weak acid HA with a pK=4.00 is created at 0.10 M. What is the percent ionization of this acid to the nearest tenth of a percent?
Part B A buffer was made by mixing 10mL of 0.40M sodium dihydrogen phosphate (NaHPO) with 10mL of 0.40 M sodium hydrogen phosphate (NaHPO). What is the pH after 20.0mL of 0.010M NaOH is added to the buffer? The 3 K values for phosphotic acid are: K = 7.5x10, K = 6.2x10,K = 4.8x10.
Part C Consider the weak acid H2A, with Ka1=1.00x10^{-4} and Ka2=1.00x10^{-8}. Write all equations associated with this weak acid's equilibrium. (Hint-there are 5).
ANALYTICAL CHEMISTRY - PLEASE I NEED HELP ASAP! (Use significant figures and scientific notation) Part A...
Need help with question 4. Answered - Correct! 2 attempts left. Change your responses to resubmit Question 4: Buffers Homework. Unanswered A buffer was made by mixing 10mL of 0.40M sodium dihydrogen phosphate (NaH2PO4) with 10mL of 0.40 M sodium hydrogen phosphate (Na2HPO4). What is the pH after 20.0mL of 0.010M NaOH is added to the buffer? The 3 Ka values for phosphotic acid are: Kal = 7.5x10–3, Ka2 = 6.2x10-8,6 a3 = 4.8x10-13 Numeric Answer: 9.4 You are incorrect...
I need help with the problem in the last photo.. I thought I’d post my lab explanation and data if that helps you get a better understanding, but it’s just the question at the end. I know I need to use the Henderson Hasselbach equation.. so... 4.70 = pKa + log( [acetate-ion] / [acetic-ion] ) and solve for pKa, then Ka.. but how do I find the concentrations to put in the log fraction? Thanks, in advance! Learning Objectives: 1....