Compounds P and Q were mixed together at various concentrations and the initial rate of each reaction was measured.
Exp 1: \( [P] = 0.20 \, mol \, dm^{-3} \), \( [Q] = 0.15 \, mol \, dm^{-3} \), Initial Rate = \( 0.50 \, mol \, dm^{-3} \, s^{-1} \)
Exp 2: \( [P] = 0.10 \, mol \, dm^{-3} \), \( [Q] = 0.15 \, mol \, dm^{-3} \), Initial Rate = \( 0.25 \, mol \, dm^{-3} \, s^{-1} \)
Exp 3: \( [P] = 0.20 \, mol \, dm^{-3} \), \( [Q] = 0.30 \, mol \, dm^{-3} \), Initial Rate = \( 1.00 \, mol \, dm^{-3} \, s^{-1} \)
What are the orders of reaction with respect to P and Q?