Final answer:
The reaction order of the decomposition of p-toluene sulfonic acid cannot be deduced from the provided chemical equation alone; experimental kinetics data is necessary to ascertain the reaction order.
Step-by-step explanation:
The reaction order for the decomposition of p-toluenesulfinic acid cannot be determined from the equation alone, which is 3 CH₃C₆H₄SO₂H(aq) → (CH₃C₆H₄)₂SO₂(s) + CH₃C₆H₄SO₃H(aq) + H₂O(l).
To determine the reaction order, information about the reaction kinetics, such as the rate law and concentration-time data, is required. This could involve experiments to monitor the concentration of reactants or products over time and analyze the rate at which the reaction proceeds.