- Joined
- Apr 25, 2011
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Hey guys,
These are a couple of questions from the past few practice exams I took where I either guessed the answer correctly or just blindly guessed. Since we're not given reductive potentials on the MCAT, I was wondering how to answer these correctly. Thank you!
The standard potential for the reaction
Zn2+ + 2e- -> Zn
equals -0.763 V. When a strip of Zn is placed in a 0.1 M solution of HCl (aq), does the zinc strip begin to dissolve?
When a strip of Cu is placed into H20(l), no change is observed. However, when a strip of Cu is placed into a solution of HNO3+, a gas evolves. What is the most likely identity of the gas?
These are a couple of questions from the past few practice exams I took where I either guessed the answer correctly or just blindly guessed. Since we're not given reductive potentials on the MCAT, I was wondering how to answer these correctly. Thank you!
The standard potential for the reaction
Zn2+ + 2e- -> Zn
equals -0.763 V. When a strip of Zn is placed in a 0.1 M solution of HCl (aq), does the zinc strip begin to dissolve?
When a strip of Cu is placed into H20(l), no change is observed. However, when a strip of Cu is placed into a solution of HNO3+, a gas evolves. What is the most likely identity of the gas?