Chemical Equilibrium 2

Chemical Equilibrium 2 - / I. II. III. The forward and...

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/ I. The f o r w ard and reverse reactions both continue. II. The rates of the forward and reverse reactions are equal. III. The concentrati o n s of r e actants and products are equal. I and II onl y - I a nd III only II and III only I , II and III a) equi li bri u m constantl y changes ~ . . . ® reac ta nts and , pro d u cts ke e p r e acting c) rat es of th e forward a nd ba c k w ard r ea c tion s chan g e ) - d) co nce ntration s o f the r ea ct a nt s and products continu e to ch a n g e 3. A t 3 5 D C , K = 1.6 x 10 - 5 mol / L for the r e action : 2 NOCl (g) ~ 2 NO ( g) + Ch (g) a) [ NO ] = [ NOe l] b) 2[ NO ] = [ Ch] .- Q [ NO Cl] < [ C h] ~ [ N O] < [ N O C l] V 1 . 6 y . )O - ~ ~ JJ V < . r 2 [ .. : ' -7 ~ u - > C ! I -- _ : _ _ _ _ " _ .. J , \ . " "1 <. 1 - I 4. If th e equilib r ium co n s t a nt for an equilibrium s yst em is d e creased by an i ncr e a s e in temp era ture th e n ~ [ re actan ts ] i n c r eas es and [produ c ts] d e cr e ases " " b ) / [r e act a n ts ] decr eas es and [product s ] i n cr e ases c) [ re a ct a n t s ] and [p r oducts] d e c re ases d ) [r eac tan ts ] an d [ pr odu c ts] in c r eas es is 0, 25 at 4 40°C . W hat w ould the v alu e o f the e quilibrium cons t ant be for the f o llo\ ving rea cti o n a t t he s ame t e mperature? B.2 ( g) + 1 2(g) ~ 2HI (g) C ~ O
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2 4 - ) -- " \3 i ~ ~ , - = I 0 O . ~ l. 5 J. ,- _ - J I . J ) tf o r th e f ollovving e qua t i on: 2A + B ~ C (; ( - + -p _ ~ ~ _ _ X ' C " \ .S ' . \ ' 1 ? Calcu la te t he equilib ri u m constan t i f a s ol ution which is orig i nall \ J J ' 1 Q21 at i ill pur e C becomes 1. 0 mo l ar in C at e q uil i bri u m . f 1 ( lYl ( < b y c) 0 . 250 . ~ 2 d ) 4.0 ; - 4 . \ \S 4:: : ; . c ! P - ',, - e) 1 . 0 K ::- ~ k - 1 , 5 2HI(g) ~ H2(g) + I2(g) ~ \ ~ (;) ~ he con c entrations ofBI , Hz and I z are determined to be 0.2 M, 0 .1 M and <t ' 0 . 1 M, respecti v ely . The system: S L t 1 )f k -- ? - ~ - e ' \ ; l .- I .. ~ \~/ : o JM - ( I ) \ a) is at equil i brium . C{ : C J , } I (0 , \ b) n e eds to shift left in order to establish equilibrium . ~ k > Q ( 8 ) needs to shi f t right in order to establ i s h equi l ib r ium. f / 0 ) a r needs a catalyst in order to estab li sh equi li brium. \ . : . < .. ~/ \ . {J
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This note was uploaded on 11/08/2011 for the course ECON 1B03 taught by Professor Hannahholmes during the Fall '08 term at McMaster University.

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Chemical Equilibrium 2 - / I. II. III. The forward and...

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