Advanced Environmental and Earth Sciences Teacher Guide

(PS-2979)

Teacher manual for Advanced Environmental and Earth Sciences labs. Has both the printed version and a flash drive with teacher tips, a PDF of teacher version and editable Word student version.

Air Pollution & Acid Rain

Lab Summary

Use a pH sensor to investigate chemical reactions important in the formation of acid rain to understand the relationship between man-made emissions, acid rain, and problems arising from acid rain.

Theory

In this activity, students investigate chemical reactions that are important in the formation of acid rain to better understand the relationship between certain types of man-made (anthropogenic) emissions and problems arising from acid rain. During this investigation, students:

  • Determine the effect of different anthropogenic gases on the pH of water.
  • Discuss the effect of changes in the pH of water on the environment.

Downloads

  • Sample Lab - Air Polution and Acid Rain (741 KB – PDF)
  • Method

    Students gain experience conducting the following procedures:

    • Learning the chemical reactions involved in generating three types of gases (CO2, SO2, and NO2) that are common anthropogenic emissions.
    • Measuring the effect of CO2, SO2, and NO2 on the pH of water using a pH sensor.
    • Analyzing the chemical reactions that lower the pH of rain.

    Sensors / Equipment Used:

    Advanced Water Quality Sensor

    (PS-2230)

    MultiMeasure sensor that incorporates pH, conductivity, temperature, and the optical dissolved oxygen probe.

    Materials Used:

    1 M HCl - 15 mL
    1-hole rubber stopper for flask 
    Beaker, 40-mL 
    Erlenmeyer flask, 50-mL 
    Flexible Teflon® tubing to fit glass tubing - 20 cm
    Glass tubing for rubber stopper 
    Graduated cylinder, 50- or 100-mL 
    Graduated pipet, 4-mL and pipet bulb
    Sodium bicarbonate - 5 g
    Sodium bisulfite - 5 g
    Sodium nitrite - 5 g
    Wash bottle containing distilled or deionized water
    Water or deionized water  - 1 L

    Your Bundle Options:

    Option 1:

    Advanced Environmental and Earth Science Starter Sensor Bundle

    (PS-2915A)

    Starter Sensor bundle designed for use with Advanced Environmental and Earth Sciences Solutions.

    Option 2:

    Advanced Environmental and Earth Science Standard Sensor Bundle

    (PS-2916A)

    Standard bundle for Advanced Environmental and Earth Sciences Teacher Guide,

    Interface Required

    This experiment may require software and an interface for data collection.