【Daily Question】Theoretical Foundation 2020.08.27
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This post was last edited by Qingse Nianhua on 2020-8-27 08:13. Multiple-choice question: Given the reaction NO(g) + CO(g) == 1/2N2(g) + CO2(g), with ΔrHmθ = -373.2 KJ/mol, the measure that facilitates the maximum conversion of the toxic gases NO and CO is: ( ) A. Low temperature and low pressure B. Low temperature and high pressure C. High temperature and high pressure D. High temperature and low pressure. Answer: B. Hint: Those who can explain the solution process will receive an additional reward; the answer can be found in the replies
C. Endothermic reaction with reduced gas volume.
The enthalpy value is negative, indicating an endothermic reaction; the volume of the gas before the reaction is greater than that after the reaction. To shift the reaction equilibrium to the right, it is necessary to increase the temperature or pressure – hence option C is correct