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pH Determination Experiment: Measuring Acidity and Alkalinity, Lab Reports of Chemistry

Baton Rouge Community CollegeChemistry

An experiment focused on determining the ph of various solutions using ph paper and a universal ph indicator. It details the procedure, including the materials used (such as hydrogen chloride, sodium bicarbonate, and sodium chloride), and the steps taken to measure the ph of each solution. The experiment aims to teach students how to identify substances as neutral, acidic, or alkaline based on their ph values. A data table summarizing the ph measurements obtained for each solution using both ph paper and a universal indicator, along with observations about the nature of each solution (neutral, acidic, or alkaline). It concludes by summarizing the findings and reinforcing the relationship between ph values and the chemical properties of the tested substances. This experiment is suitable for introductory chemistry courses, providing hands-on experience with ph measurement techniques and the interpretation of ph values.

Typology: Lab Reports

2023/2024

Available from 05/30/2025

Usvah-Hasan
Usvah-Hasan 🇺🇸

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Baton Rouge Community College
Experiment title:
Experiment 9 – Determination of pH
Course/Section #:
Chemistry 1121
Semester:
Spring 2024
ABSTRACT:
1. The purpose of this experiment is to measure the pH of several solution using pH papers
and universal pH indicator solutions.
2. The experiment was carried out by following method:
https://www.youtube.com/watch?v=-lbh5_1xxtI
3. Hazards of solutions
Name
Formula (if
known)
Hazard
Hydrogen chloride
HCl
Causes skin burns and eye damage. Causes
irritation and inflammation in respiratory tract.
pf3

Partial preview of the text

Download pH Determination Experiment: Measuring Acidity and Alkalinity and more Lab Reports Chemistry in PDF only on Docsity!

Baton Rouge Community College

Experiment title:

Experiment 9 – Determination of pH

Course/Section #:

Chemistry 1121

Semester:

Spring 2024

ABSTRACT:

  1. The purpose of this experiment is to measure the pH of several solution using pH papers and universal pH indicator solutions.
  2. The experiment was carried out by following method: https://www.youtube.com/watch?v=-lbh5_1xxtI

3. Hazards of solutions

Name Formula (if known) Hazard Hydrogen chloride HCl Causes skin burns and eye damage. Causes irritation and inflammation in respiratory tract.

Sodium bicarbonate NaHCO 3 Causes skin and eyes irritation. Causes vomiting, diarrhea, dehydration and kidney damage. Sodium chloride NaCl N/A Universal pH indicator N/A N/A

DATA/ANALYSIS:

Procedure:

  1. Took a strip of pH paper and placed it on a tile.
  2. Took a drop of common salt solution and poured it on pH paper placed on tile.
  3. Observed the color change and noted the pH of solution.
  4. Took one drop of universal indicator solution and added to solution of common salt in beaker.
  5. Observed the color produced and compared to the colors given on indicator bottle and to find the pH value of solution.
  6. Repeated the same procedure with sodium bicarbonate solution and 0.1 molar HCl solution.
  7. Used the clean dropper and new pH strip for each test. Noted the pH of solutions.

Data Table

Name of what is tested pH (pH paper) pH (universal Indicator) Additional comments Common salt solution (NaCl) 7 7 The pH 7 indicates that solution is neutral. Sodium bicarbonate solution 9 9 The value of pH 9 indicates that sodium bicarbonate is alkaline in nature.