Since the reaction for all three reaction mixtures is the same, the for each reaction is the same. Therefore, instead of comparing the actual reaction rates, one can compare the for each reaction The first system has X particles and Y particles . The second () system has X particles and Y particles . The third system has particies and Y particles . The is greater for thereaction, so this reaction has the highest initial rate

Since the reaction for all three reaction mixtures is the same the for each reaction is the same Therefore instead of comparing the actual reaction rates one ca class=