Effects of Acid Rain Lab objectives To visualize the effects

Effects of Acid Rain Lab objectives; To visualize the effects ofacid rain on a living organism. Questions: lima be How does simulated acid rain affect the germination of a Materials: paper towels 3 cups or containers tap water 3 Ziploc bags vinegar 15 lima beans (soak in warm water overnight before using) Procedure: 1) Prepare the simulated \"rain.\" 1.2, or 3. water a. Number each of the cups or containers as of plain water (tap b. #1 Rainwater:\" Fill cup or container with 2 cups Cup would be fine). container with cup vinegar and 1 cups of Cup #2 \"Mild Acid Rain: Fill cup or d. cup #3 Strong Acid Rain: Fill cup or container 2 cups of vinegar. Water, e. Soak a paper towel in each ofthe cups. 2) For each bag place the p in with 5 presoaked lima beans. 3) Label each Ziploc bag 4) Write a hypothesis respective towe of the lab. answering the question posed at the beginning 5) observe their growth over the next 5 days adding more liquid if necessary to the paper towels.

Solution

1.
a) Acid rain is a phenomenon causes due to elevated level of hydrogen ions (H⁺ions) in rainwater which lowers the pH of rainfall water and causes it to be \"acidic\" in nature.

b) Acid rain is mainly causes due to the reaction of atmospheric water molecules with sulfer oxides and nitrogen oxides gases emitted mainly due to man made activities like fossil fuel burning and synthesis of products in chemical factories.

Here is an example of the reaction that place in the atmosphere to form sulphuric acids from sulpher dioxide in the atmosphere-

In the gas phase sulfur dioxide is oxidized by reaction with the hydroxyl radical via an intermolecular reaction:^[5]

SO₂ + OH· HOSO₂·

which is followed by:

HOSO₂· + O₂ HO₂· + SO₃

In the presence of water, sulfur trioxide (SO₃) is converted rapidly to sulfuric acid:

SO₃ (g) + H₂O (l) H₂SO₄ (aq)

In case of nitrogen dioxide the reaction is as follows, it reacts to form nitric acid.

Nitrogen dioxide reacts with OH to form nitric acid:

NO₂ + OH· HNO₃

C) Harmful effects of acid rain on plants can be summarised as follows-

3. E) Other than plants, the things affected by acid rain are-