In Activity 1 Part B, there were 2 mL of buffer per well. Calculate the final pH of the undiluted buffer after 0.25 mL o
Posted: Sat Jul 09, 2022 1:41 pm
In Activity 1 Part B, there were 2mL of buffer per well. Calculate the final pH ofthe undilutedbuffer after 0.25 mL of 0.1 MNaOH is added. The Ka ofCH3COOH = 1.8 x 10-5. Use theCH3COOH buffer concentration (concentration of sodiumacetate in the pH 4.7 buffer) calculated in Data Table 2, thebalanced CH3COOH + NaOH reaction equation, the balanceddissociation equilibrium of CH3COOH, and an ICE table todetermine the pH.
Question 13 (1 point)
Calculate the concentration of CH3COOH in the bufferafter addition of the NaOH (remember to account for the volumechange!). Show calculation in the first blank and the number ofmoles in the second.
Question 13 options:
Question 14 (1 point)
Calculate the concentration ofCH3COO- in the buffer after addition ofthe NaOH (remember to account for the volume change!). Showcalculation in the first blank and the number of moles in thesecond.
Question 14 options:
Question 15 (2 points)
Using the dissociation equilibrium of acetic acid and thecalculated concentrations of acetic acid (CH3COOH) andacetate (CH3COO-), set up an ICE table. Take a pictureof your ICE table and upload to the dropbox as Exp 5ICE Table 1. Points earned for this table will be enteredas your score for this question.
Question 13 (1 point)
Calculate the concentration of CH3COOH in the bufferafter addition of the NaOH (remember to account for the volumechange!). Show calculation in the first blank and the number ofmoles in the second.
Question 13 options:
Question 14 (1 point)
Calculate the concentration ofCH3COO- in the buffer after addition ofthe NaOH (remember to account for the volume change!). Showcalculation in the first blank and the number of moles in thesecond.
Question 14 options:
Question 15 (2 points)
Using the dissociation equilibrium of acetic acid and thecalculated concentrations of acetic acid (CH3COOH) andacetate (CH3COO-), set up an ICE table. Take a pictureof your ICE table and upload to the dropbox as Exp 5ICE Table 1. Points earned for this table will be enteredas your score for this question.