【Daily Question】Jan 27, 2016: Participation +2 Wealth； +3 to 8 wealth for correct answers
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This post was last edited by zjp on 2016-1-27 at 17:19. To increase the popularity of the chemical analysis section, a \"One Question per Day\" campaign has been launched; this aims to foster active technical exchanges while also providing financial rewards to users. 【Daily Question】 (Single-choice question) The principle for selecting a stationary phase in gas-liquid chromatography is ( ). A. Similar solubility B. Same polarity C. Same functional groups D. Same reactivity. Correct answer: A. Reply with your answer in the comments; you will receive +2 wealth points for participating in the quiz. An additional +3 to +8 wealth points will be given if all answers are correct. Extra rewards will also be provided if a thorough analysis and explanation of the questions or answers is given, or if detailed calculation processes are included. If your answer is correct and your analysis and explanation are accurate, it will be marked as the best reply (or the best assistance). Feel free to answer the questions. Note: We will close this post after 24 hours, and at that time we will announce the best reply (the best assistance), as well as the answer and explanation.
The principle for selecting a stationary phase in gas-liquid chromatography is (B). A Similar solubility B Same polarity C Same functional groups D Same reactivity
The principle for selecting a stationary phase in gas-liquid chromatography is (A). A Similar solubility B Same polarity C Same functional groups D Same reactivity
A Due to the different adsorption or dissolution capacities of various components in the stationary phase, that is, because the distribution coefficients of these components between the stationary and mobile phases vary, as the components undergo repeated distribution between the two phases and move forward with the mobile phase, they travel at different speeds along the column. Components with lower distribution coefficients are retained in the stationary phase for a shorter time and can thus emerge from the end of the chromatography column more quickly.
The principle for selecting a stationary phase in gas-liquid chromatography is (A). A Similar solubility B Same polarity C Same functional groups D Same reactivity