【Daily Question】Sulfur Technical Edition, July 10, 2017

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To increase the popularity of this section, a daily quiz campaign has been launched. The goal of this campaign is: “Learn a little bit every day, and make significant progress over ten days.” I hope everyone will participate actively; by learning and making progress, they can also easily bring wealth home :) . Participation: Prize of 5 Wealth ； Correct answer: Reward of 10 wealth points ； Note: Questions from the same day will receive full feedback if answered on the same day; answers given the next day will earn 5-8 wealth points. This post is valid for 48 hours. True or False: ( ) The intensity of the rotten egg smell of hydrogen sulfide is directly proportional to its concentration. Answer: × The intensity of the rotten egg smell of hydrogen sulfide is not proportional to its concentration; once the concentration exceeds a certain level, people can no longer detect the presence of H2S.