Chemical Kinetics 2 Flashcards
(5 cards)
True or false: Across both weeks of Reaction Kinetics, to determine both the reaction order with respect to crystal violet and the reaction rate constant, we are using two independent analytical methods: the method of initial rates (in week 2/RK2) and the method of integrated rate laws.
True
Only two of the reaction samples’ crystal violet concentrations and initial rates will need to be compared to confirm the order of reaction using the initial rates method.
False
After adding the sodium hydroxide to a reaction sample cuvette, why is it so important to quickly mix the solution and begin taking measurements?
Since we are using the method of initial rates to determine the reaction order and rate constant, we need to collect data as quickly as possible to avoid losing that initial rate information.
Find the page for crystal violet (listed as Gentian Violet, Pubchem CID 11057) on the PubChem database (https://pubchem.ncbi.nlm.nih.gov/). Scroll to section 13 of the page’s contents (“Safety and Hazards”) and look at the warnings for crystal violet.
Check all of the following GHS Hazard Statements that are listed for the compound in section 13.1.1.
Harmful if swallowed
Causes serious eye damage
May cause cancer/suspected of causing cancer
Very toxic to aquatic life (with long lasting effects)
True or false: After you remove 500 uL of diluted crystal violet solution from a standard sample cuvette using a 1000-uL micropipette, it is appropriate to use the same micropipette with the same tip to transfer 500 uL of 0.100 M sodium hydroxide to the cuvette for the reaction trial.
False
