Question

1. place these unknown ph test papers in order from most acidic to most alkaline.

1. chemicals in the air can combine with rain to produce acid rain, which is harmful to the environment. which of these is most likely to be the ph of acid rain?

1. chemlab: ph analysis

student exploration lab sheet
click on the resource tab for lab sheet, complete log entry and attach the document

Explanation:

• For question 24: pH values range from 0 - 14. Lower pH values are more acidic and higher pH values are more alkaline. By comparing the colors of the pH - test papers to the pH color chart, we can determine the order.
• For question 25: Acid rain has a pH less than 7. A pH of 0 is a very strong acid, but acid rain usually has a pH around 4 due to the presence of pollutants like sulfur dioxide and nitrogen oxides in the air that react with water to form weak acids.

Answer:

1. Need to see the actual colors on the pH - test papers compared to the chart to determine the order.
2. B. 4