Q1: The order of a chemical reaction

ANS:B - can be determined from the stoichiometry of the reaction.

The statement "can be determined from the stoichiometry of the reaction" is not accurate in the context of determining the order of a chemical reaction. The order of a reaction cannot be reliably determined solely from the stoichiometry of the reaction, which refers to the balanced chemical equation showing the relative proportions of reactants and products. The order of a chemical reaction refers to the mathematical relationship between the concentrations of reactants and the rate of the reaction. It is determined experimentally through methods such as the initial rate method or the method of initial rates with integrated rate laws. The stoichiometry of the reaction provides information about the relative amounts of reactants and products involved in the reaction, but it does not provide information about the rate at which the reaction occurs. The rate of a reaction depends not only on the stoichiometry but also on factors such as the mechanism of the reaction, the activation energy, and the concentrations of reactants. To determine the order of a reaction experimentally, one typically conducts multiple trials at different initial concentrations of reactants and measures the initial rates of reaction. By analyzing the data obtained from these experiments, one can determine the mathematical relationship between the concentrations of reactants and the rate of the reaction, thereby determining the order of the reaction. In summary, while the stoichiometry of a reaction provides valuable information about the reactants and products involved, it is insufficient for determining the order of the reaction. The order of a reaction must be determined experimentally through rate studies.