【Daily Question No. 111】April 21, 2017

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This post was last edited by 955559 on 2017-7-21 at 22:45. [Daily Question No. 111] On 2017.04.21, the pressure at which the liquid phase of a substance is in equilibrium with the gas phase above it at a certain temperature is called ( ). A. Critical pressure B. Saturated vapor pressure C. Atmospheric pressure D. Vaporization pressure. The reference answers can be seen after responding; scoring is possible by identifying the key points. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) B rating criteria: 2 Wealth points for incorrect attempts; *incomplete* answers result in 3–8 points. 10 Wealth points are awarded for correct answers, provided there is a detailed explanation; if additional *answers* are missing, 15–20 Wealth points are given. Please use these criteria for scoring. 2017 Q&A Summary Thread (updates starting now) http://bbs.hcbbs.com/thread-1657793-1-1.html 2017 Daily Question Summary Thread (updates starting now) http://bbs.hcbbs.com/thread-1657794-1-1.html 2016 Q&A Summary Thread (updates completed) http://bbs.hcbbs.com/thread-1597792-1-1.html Petrochemical Sector – “Creative Ideas for Energy Savings” campaign (sponsors sought; highest returns ever) http://bbs.hcbbs.com/thread-1666758-1-1.html Sponsors are being sought for this campaign; those interested may contact the event organizer. Petrochemical deep processing edition – the event to share pictures of chemical equipment has started! A vast amount of wealth, along with HCH coins, is waiting for you to claim it: http://bbs.hcbbs.com/thread-1760733-1-1.html. Notice regarding the collection of chemical engineering technical materials in the “Petroleum and Chemicals Section”: http://bbs.hcbbs.com/thread-1614796-1-1.html (Source: HCH Chemicals Forum)