CHEM 1001 Lab 3 Report (Buffer Solutions), Summer 2020 CHEM1001 Lab 3 Report

Document Content and Description Below

CHEM 1001 Lab 3 Report (Buffer Solutions), Summer 2020 Please write your name, student name and your signature on every page of work you submit. NOTE: This lab report must be an independently produc... ed piece of work. Collaboration of any kind is not permitted and violates the Senate Policy on Academic Honesty. PART 1 First, report the target pH of the buffer you have been assigned to synthesize. Target pH 4.20 1. Based on your target pH, the lab manual assigns you to use 5.00 mL of 0.10 M acetic acid or 0.10 M sodium acetate. Use the Henderson-Hasselbalch equation in your lab manual to calculate the amount of the other reagent you need to achieve the target pH. Fill in the table as you perform your calculations. Which reagent were you assigned to use 5.00 mL of? Amount of assigned reagent (mol) Amount of other reagent needed to achieve target pH (mol) Sodium acetate 0.100 M 0.00173 mol 1.73 x 10-3 mol Volume of other reagent needed to achieve target pH (mL) 0.0173 L = 17.3 mL Show your work below for calculation of: amount of assigned reagent, amount of other reagent needed, volume of other reagent needed.  Amount of assigned Acetic in moles 5.00 of 0.100 of Sodium Acetate = 0.005 L x 0.100 Mol = 0.0005 mol  Amount of other reagent needed to achieve target pH (mol)?  pKa of acetic acid is 4.74 4.20 = 4.74 + log (0.0005) – log (x) 4.20 – 4.74 – log (0.0005) = -log (x) [Show More]

Last updated: 1 year ago

Preview 1 out of 4 pages