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Quiz 4, Sp 07

# Quiz 4, Sp 07 - ChE2114 Fourth Quiz 1(40 points Consider...

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Unformatted text preview: ChE2114 Fourth Quiz February 23, 2007 1. (40 points) Consider the synthesis of ammonia (N 2 + 3 H; (—> 2 NH3) with the usual arrangement of recycle and purge. The fresh feed to the process is 1.00 mol % argon, and the argon in the recycle is 5.00 mol %. If the fresh feed rate is 200 kilomoles per hour, what is production rate for NH3 in ' '7 kilomoles per hour. ; . ' firms) :23.75°7.. N; l: 2 {M 7:45:70 H;L (L Loo‘k-M‘ 0,0joo(2_oo_):o.osoop 4_(qq):,2,4-."L5%N;. F =+o o 13. ‘ 174.15% H2. I T NH W =- ,Loo(o.2.4—75)=: +o.o(o.2_5r75)+—-§ X -3): 0W ”X m ‘m' “313—” L 2. (40 points) Wastew'ater from a manufacturing facility ﬂows at a rate of 5,000 kg/hr and contains 8.00 mass % impurities. A separator is available which can handle a maximum of 3,000 kg/hr of the wastewater. The separator removes 90.0 % of the impurities in the feed to the separator, and this concentrated impurity stream leaving the separator is 40.0 mass % water. Calculate the mass % impurities in the “puriﬁed” wastewater that leaves the process. 1* 0.90o[300¢xo.osoo):zte%i Mums) :- 14—4—JP—3/‘qu H10 9.00%; 400%.: 4-00-- Lté :— tse%s: 1 9+ 5,000—3 co:— +,c+o% 4_éérOXIOO—3.47WD70L. ”we, '3, (20 points) The reaction C2H4 + HCl —> C2H5Cl occurs in a continuous reactor. The feed to the reactor contains onlyr C2H4 and HCl. The product stream leaving the reactor is 35.0 mol % C2H5CI and 45.0 mol % HCl. What is the percentage excess for the reactant present in excess? 8 _ C. H (L 5 5. 0 Ma. W: 55.0 Cqu. 55'°+29°0 A 5 +5. Om—QA— too .Wﬁs 30.0 HCQ. 35.0+'45.0 - C—L Hq- 42.0.0ﬂ1ﬁ49-Q/4—a W _. 900,550 3%“ WoWHC—«L —" 75—O— Xtoo= \$5.570. ...
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