[Knowledge of Ammonia Synthesis] Daily Question (15) 01.04.2010

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This post was last edited by *aoye613 on 2010-1-3 20:27. Please hide the answers in replies; no scoring will be given unless the answers are hidden. Specific hiding method: http://bbs.hcbbs.com/viewthread.php?tid=492556&highlight=%D2%FE%B2%D8 Multiple-choice question 1. The requirements for first-class liquid ammonia products are ( ). A NH3%≥99.99% H2O≤0.01% Oil≤5mg/kg B NH3%≥99.9% H2O≤0.1% Oil≤10mg/kg C NH3%≥99.9% H2O≤0.1% Oil≤5mg/kg D NH3%≥99% H2O≤1% Oil≤10mg/kg 2. The iron ratio of the A110-1 ammonia synthesis catalyst is ( ). A 0.3～0.4 B 0.5～0.6 C 0.8～0.9 D 1～1.2 3. The inert gases in the synthesis circuit include ( ). A CO B N2 C CH4 D Ar 4. The relationship between the equilibrium concentration Z of ammonia synthesis in the presence of an inert gas and the equilibrium ammonia concentration Z0 in the absence of such a gas is ( ) (where i0 is the concentration of the inert gas without ammonia). A Z=Z0 X (1-i0)/(1+i0) B Z=Z0 X (1+i0)/(1-i0) C Z=Z0 X i0/(1+i0) D Z=Z0 X i0/(1-i0) 5. The heat released per ton of ammonia produced is approximately ( ) X 109 X 4.1868 J. A 1.2 B 0.76 C 0.53 D 0.35 Answer key: 1、C 2、B 3、CD 4、A 5、B