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i think that u need to look at the rate equation which is

RATE=K*(X)*Y WHERE Y IS THE ORDER OF REACTION WRT DAT REAGENT

SO IF THE CONC INCREASED BY 2 AND UR RATE BY 8 THEN WE (2)*3=8

HENCE IT IS A THIRD ORDER RXN

IF U DONT BELIEVE ME PLOT GRAPHS OF CONC VS TIME OR REACTION RATE VS CONC

THE SHAPE TELLS US THE ORDER.....

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16y ago

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