In the reaction HCO2H(aq) +Br2(aq) ----> 2H+(aq)+ 2Br-(aq)+CO2(g) the Rate = k[Br2] ....why isn't the HCO2H(aq) included in the brackets here?
NOTE that not all reactions follow elemntary rate laws
elementary rate law:
- the reaction depends directly to the reactants concnetrations, and to the power of the reactants stoichiometric coefficient
examplke of alementary rate law:
A + 2 B = C + D
RATE = K*[A][B]^2
note that this is only the case for very special reactions
there are many cases in which experimental data will not depend on such concnetrations
in
HCO2H(aq) +Br2(aq) ----> 2H+(aq)+ 2Br-(aq)+CO2(g)
this is an hallogne (Br2) attacking the acid
sicne Br2 is much more electronegative, it will behave as ana cid
HBr --> H+ and Br- in solution
the rate depends on ly on Br- in this case due to the fact that Br2 is the one who attacks
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