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chap 7/8

QuestionAnswer
IF THE CONC OF ONE SPECIES IN EQUILIBRIUM DECREASED THE POSITION OF EQ SHIFTS... TO FORM MORE OF THAT SPECIES.
DICHROMATE (VI) IONS CR2O72- ORANGE & CHROMATE IONS YELLOW IN AQ SOLUTION .... THEY ARE IN EQUILIBRIUM CR2O72-(AQ) H2O(L) REVERSE ARROWS 2CRO42-(AQ) +2H+(AQ)
PREDICT/EXPLAIN COLOUR WHEN NAOH SOLUTION ADDED TO CHROMATE AND DICHORM .... THE ALKALINE SODIUM HYDROXIDE REACTS WITH H+IONS (AQ) IN EQUILIBRIUM MIXTURE, LOWERING H+IONS CONCENTRATION. CAUSES EQUILIBRIUM TO SHIFT TO THE RIGHT THE SOLUTION CHANGES COLOUR FORM ORANGE TO YELLOW AS CHROMATE IS FORMED FORM DICHROMATE.
THE RATE OF REACTION WITH CATALYST IS ... FASTER THAN RATE OF REACTION WITHOUT. IT LOWERS THE EA.
A CATALYST HAS NO EFFECT ON ... THE POSITION OF EQUILIBRIUM OF THE REVERSIBLE REACTION.
CATALYST IS FAIR BECAUSE IT ... SPEEDS UP FORWARD AND BACK REACTION EQUALLY, SO EQUILIBRIUM IS REACHED FASTER.
A CATALYST AT ROOM TEMP IS ... SLOW.
FINDING SUITABLE CATALYST VERY NECESSARY FOR EXOTHERMIC REACTION ... COZ PRODUCES LOWER YIELD AT HIGH TEMPS.
WHAT HAPS IS HABER PROCESS HAD NO CATALYST. VERY LOW YEILD.
FOR REVERSIBLE REACTION ... A HIGH TEMP RESULTS IN LOW EQUILIBRIUM YIELD, REACHED QUICKLY COZ REACTION IS FAST. LOWER THE TEMP CAUSES ,HIGH EQUILIBRIUM YIELD REACHED MORE SLOWLY COZ REACTION RATE IS SLOW.
WHY IS A CATALYST NEEDED FOR HABER PROCESS ... ALLOW REACTION TO TAKE PLACE RAPIDLY AT LOWER TEMP, OF ACCEPTABLE YIELD PRODUCED AT REASONABLE RATE.(CALLED COMPROMISE TEMP AS IT BALANCES AN ECONOMIC YIELD WITH AND ECONOMIC RATE).
WHY IS THE CAATKYST TEMP CALLED COMPROMISE TEMP ... BALANCES AN ECONOMIC YIELD WITH AND ECONOMIC RATE.
Created by: ufuoma
 

 



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