6.2. Yes, pressure is only applied for the gasous molecules. Therefore the state of reactants is the factor that affects the rate for the gaseous molecules.
6.16.1 the unit can be determined by the given units. If you look at the table, the unit for the concentration is mol/cm-3 and mol dm-3 h-1. Also the unit for the rate is mol/voluue/time because it is the concentration change per time.
6.16.3#12's answer is B... Yes when the temperature of a reaction incrases, the rate constant increases.
6.16.3 #15 You should find the correct answer. C is incorrect statement. Yes, that is how you should find the answer. When you find the rate equation, you should not use the cofficient for the exponents of the rate equation. The order of the rate equation always figured out from the expermental value.