【Daily Question】1.24 Corrosion of Cu sheets in oxygenated H2SO4 (3 rewards for replying + additional 3–8 rewards for correct answers)
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This post was last edited by lzy4225925 on 2016-1-25 08:26. Topic: Judgment: In oxygenated H2SO4, copper sheets first undergo oxygen absorption corrosion, and then hydrogen evolution corrosion. ( ) Wrong. Requirements for answering the question: Answer carefully. Hint: You can guess if you’re unsure. Note: We will close this thread after 24 hours, and at that time we will announce the best response (the best help), along with the answer and explanation. Other details: Recruitment for moderators & technicians in the [Mechanical Section] – applications and referrals are welcome. 【Valid indefinitely】【If you’re interested, come ahead!】 】(Click to enter) 【Mechanical Zone】Comprehensive guide to preventing equipment freezing over during winter 【Mechanical Zone】Call for collection of essential knowledge 【Seeking manufacturer sponsors】(Ongoing campaign) Rewards for recommending valuable content; the “Most Active Users and Weekly Stars” competition in the Mechanical Zone has begun. Wealth, metals, corrosion, zones, machinery
Error-----------------------------------------------Oxygen absorption corrosion: Electrochemical corrosion that occurs when oxygen from the air dissolves into the water film on the surface of a metal in a solution that is weakly acidic or neutral. Electrochemical corrosion that takes place in a more acidic solution, during which hydrogen gas is released, is called hydrogen evolution corrosion.
In oxygenated H2SO4, Cu sheets first undergo oxygen absorption corrosion, and then hydrogen evolution corrosion. ( Wrong )
In oxygenated H2SO4, Cu sheets first undergo oxygen absorption corrosion, and then hydrogen evolution corrosion. ( Wrong )
In oxygenated H2SO4, Cu sheets first undergo oxygen absorption corrosion, and then hydrogen evolution corrosion. ( Wrong )
In oxygenated H2SO4, Cu sheets first undergo oxygen absorption corrosion, and then hydrogen evolution corrosion. ( √ )