Potassium superoxide, KO2, is often used in oxygen masks (such as those used by firefighters) because KO2 reacts with CO2 to release molecular oxygen. Experiments indicate that 2 mol of KO2(s) react with each mole of CO2(g). (a) The products of the reaction are K2CO3(s) and O2(g). Write a balanced equation for the reaction between KO2(s) and CO2(g). (b) Indicate the oxidation number for each atom involved in the reaction in part (a). What elements are being oxidized and reduced? (c) What mass of KO2(s) is needed to consume 18.0 g CO2(g)? What mass of O2(g) is produced during this reaction?
Chapter 7 Relevant Key Terms 1. SN2: 1 step mechanism, x leaving and y inserting at same time, both arrows drawn at once, 1 transition state, 0 intermediates, Back-Side Attack, Inversion Configuration, “RDS” Rate Determining step - bimolecular - 2 molecules involved, 2. SN1: 2 step mechanism, “RDS” Rate Determining Step - Unimolecular - 1 molecule involved, Racemization of Stereochemistry (R to R,S) 3. Solvolysis: hen the solvent functions as the nucleophile 4. Alkyl Halide: chemical compounds derived from alkanes containing one or more halogens a. Alpha Position: the first carbon atom that attaches to a functional group b. Beta Position: second carbon atom attached to the