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chap 7/8
Question | Answer |
---|---|
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. |