Date: April 14, 2013
Instructor’s Name: Kristina Jantz
Assignment: SCI103 Phase 1 Lab Report
Title: Measuring pH Levels
Instructions: Enter the Virtual Lab, and conduct the experiments provided before going out into the filed for additional research. Please type your answers. When your lab report is complete, submit it to the Submitted Assignments area of the Virtual Classroom.
Part I: Answer the following questions while in the Phase 1 lab environment.
Section 1: You will be testing 4 known solutions for pH levels using a standard wide-range indicator. Based off of the results obtained in the lab room, fill in the following table:
1. How many drops of wide range indicator will you use for each test, based on industry standards such as the LaMotte field test?
|Solution Number |pH from Lab |Acid or Base? |Solution Name (from Lab results) |
|Solution 1 |6 |Base |Water |
|Solution 2 |2 |Acid |Lemon |
|Solution 3 |11 |Base |Bleach |
|Solution 4 |5 |Acid |Coffee |
Section 2: Now that you understand how to read pH measurements, go out into the field to gather pH samples from 3 different lakes to take back to the lab for testing, and answer the following question:
2. What was the pH level measured at Lake 1? Lake 1 is located near heavily populated city with several car factories. When I got the sample and got the pH level I thought it was closest to 6.
3. What was the pH