What is the rate law for the reaction in terms of x, y, and z and the rate constant k? Express the rate in terms of k, x, y, and z (e.g., kxy^3z^2).

The iodate ion, #"IO"_3^−#, is reduced by sulfite, #"SO"_3^(2−)#, according to the following net ionic equation:
#"IO"_(3(aq))^−+3"SO"_(3(aq))^(2−)→"I"_((aq))^−+3"SO"_(4(aq))^(2−)#
The reaction is found to be first order in #"IO"_3^−#, first order in #"SO"_3^(2−)#, and first order in #"H"^+#.
If #["IO"_3^−]=x, ["SO"_3^(2−)]=y, and ["H"^+]=z#