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Lecture 1

CHM 1311 Lecture Notes - Lecture 1: Sodium Hydroxide


Department
Chemistry
Course Code
CHM 1311
Professor
Darrin Richeson
Lecture
1

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Student Name:
Student Number:
Partner’s Name and Student #:
Demonstrator's Name:
PLEASE NOTE: If ANY of the above information is UNCLEAR or not provided, your grade will NOT
be recorded!!
Laboratory Report Form
Experiment 6.
Acid/Base Titrations
Checklist:
oRaw Data Sheet written in pen, signed by TA and
attached
oReport Form completed in pen (or typed) and
attached Students Initials _____
Data Tables
Table 1. Formation of a stock solution of NaOH

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Volume of concentrated NaOH solution
(mL) 8.75 mL
Concentration of concentrated NaOH
solution (M) 6
Volume of stock solution after dilution
(mL) 488.75 mL
Approximate concentration of stock
solution (M) 0.107 M
Table 2. Standardization of Stock Solution of NaOH
Data Trial 1 Trial 2 Trial 3
Concentration of Standard
Acid solution (M) 0.1 M 0.1 M 0.1 M
Volume of Standard Acid solution
(mL) 22.00 mL 22.00 mL 22.00 mL
Volume of stock solution of NaOH
(mL) 18.84 mL 18.81 mL 18.81 mL
Concentration of stock solution of
NaOH (M) 0.117 0.117 0.117
Average Concentration of stock
solution of NaOH (M) 0.117
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Table 3. Determination of the Concentration of an Unknown Acid
Data Trial 1 Trial 2 Trial 3
Sample Number of Unknown
Acid #6 #6 #6
Volume of Unknown Acid solution
(mL) 22.00 mL 22.00 mL 22.00 mL
Volume of stock solution of NaOH
(mL) 10.25 mL 10.20 mL 10.30mL
Concentration of stock solution of
NaOH (M) 0.117 0.117 0.117
Concentration of Unknown Acid
Solution (M) 0.0545 0.0541 0.0548
Average Concentration of
Unknown Acid solution (M) 0.0544
Observations (all parts of the experiment):
-All solutions used were clear in colour before any titrations except for the
juice which had a light brown yellowish colour
-All solution turned a light pink after titrations occurred
-No noticeable odours were omitted from the solutions
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