posted by CRCAWF on .
Hello. I'm not n=sure about these answers so i was wondering if someone could check them out?
27, A: Which is a stronger acid - sulfuric or carbonic acid? (Answer: Sulfuric acid.)
27, B: Imagine you have two glasses. One contains a solution of carbonic acid. The other contains a solution of sulfuric acid. Without any other information, can you tell which is more corrosive? Explain the reasoning behind your answer.
27, C: What makes an acidic solution corrosive?
28: You have a glass of pure water. Are chemical reactions occurring in the water? If so, what are they? If not, explain why not.
29: While investigating the effects of acid rain in your area, you discover a lake that is surprisingly resistant to changes in pH caused by acid rain. Using what you have learned in this unit, explain why the lake resists changes in pH.
27, A: The glass containing a solution of sulfuric acid is more corrosive because the acidic gas compounds have an even higher corrosive property.
27, B: There are more hydrogen atoms available to pull negatively charged atoms apart from the compound they are found in.
28: Yes, because the reaction for water is reversible, so some atoms are evaporating and others are recombining to form water molecules maintaining a balance in the solution.
29: The lake may act as a buffer and either be composed of a weak acid and its conjugate base or vice versa and therefore resists changes in the pH.
Thank you - CRCAWF
You have the answers mixed up with the number of the question to the point that the whole thing is confusing. The answer to the first question (H2SO4) is correct. The answer for what you have labeled 27A is blarney.