A student proposed the following mechanism for the gas

Question

A student proposed the following mechanism for the gas phase reaction of fluorine with chlorine dioxide. 

..... step 1 ..... fast: ...... 2 ClO₂  <-----> Cl₂O₄ 

..... step 2 ..... slow: .... Cl₂O₄ + F_{2 ------>}  2 FClO₂ 

(1) What is the equation for the overall reaction? Use the smallest integer coefficients possible. If a box is not needed, leave it blank.

__________ + ________------->_________ +__________

(2)  Which species acts as a catalyst? Enter formula. If none, leave box blank: __________

(3)  Which species acts as a reaction intermediate? Enter formula. If none, leave box blank: _______

(4) Complete the rate law for the overall reaction that is consistent with this mechanism. 

Use the form k[A]^m[B]ⁿ , where '1' is understood (so don't write it if it's a '1') for m, n etc.

Rate =  __________