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Unformatted text preview: Worksheet: Le Chatelier's Principle Name S‘Qllk‘hOﬁS If a system aT equilibrium is subjected To a ﬁ‘l‘r’ﬂSS , The equilibrium is
di5placed in The direcTion That relieves The $1955 . - A sTress is defined as any change which could affect The fox-Tc, of either or both The forward and/or reverse reacTion.
- When, because of an applied stress, The forward reaction is faster Than The reverse reaction, The s stem is said To shifT To Theilright,)left). As a resuiT,
The [-roducTs] will bdecrease) and The [reactants] will (increase, - - When, because of an applied stress, The reverse reaction is faster Than The
forward reaction, The system is said To shift To The (right. As a result,
The [products] will (increase, decrees?) and The [reactants] will (WW decrease). In simpler Terms: If anything is added To a system at 63m ll bum The system will Try To consume whatever was ngﬁ d. . I f anything is removed from a
system at equilibrium, The system will Try To replace whatever was lOS‘l‘ - So, The reaction is favored away from what is emoved) and Toward what is (added, 1. In The following reaction, wiil The [H2] increaSe or decreaSe when equilibrium is
reestablished afTer These stresses are applied? N2 (g)+3 H2 (9) : ZNHS (g)+22 kCi NHafg) 13' added in; N2(g) is removed in; .
pressure is increased OLLC, Temperature is increased 1' ﬁg: 2. NoTe reaction: 2 NO (9) T HE (9) x————“ N20 (9) + H20 (9) + 36 kJ' In which direction, lefT or right, will The equilibrium shift if The following
Changes are made? NO is added Tia“)? The system is cooled H 'l'
H2 is removed it Jr" pressure is increased i -l'
N20 is added l€£t Hg is removed I £‘l’ CHEMISTRY: A Study of Matter -azuu4.orn
12.1 1 WorksheeT: Le ChaTelier's Principle Nome SOlIL’NMS 3. In This reaction: C02 (9) + H2 (9) + heat :——‘— CO (9) + H20 (9) a. Is heaT absorbed or released by The forward reacTion? (khan-3Q (e ndio‘l-Nrm it} b. In which direcTion will The equilibrium shift if These changes are made?
CO is added lt-H‘ TemperaTure is increased Yl' ‘l’ C02 is added Vr§h+ sysTem is cooled e. -l-
H2 is removed (2. pressure is increased no sh:
coTalysT is added no Shi-H' 4. In This reacTion: 2 NO (9) + Hz (9) end N20 (9) 4- H20 (9) + heaT 3 mom: 1.th
What will happen To The [H20] when equilibrium is reestablished afTer These
stresses are applied? Temperature is increased 4’
a caTalysT is added no shi£+
pressure is decreased \l’
NO is added 4‘
N20 is removed :If 5. How would an increase in pressure affecT The [H2] in The following
reacTions? 2 Hz (9) + 02 (g) 7—“: 2 H20 (9)_i/_.._ 4 H2 (9) + F8304 (s) m: 3 Fe (5) + 4 H20 (I) zit H2 (9) +C|2 (9) : 2 HCl (WM . CHEMISTRY:A Study of Matter mum.qu
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