This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.
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a) Distinguishing between a water distiller and a water deionizer: • A water distiller purifies water by boiling it and condensing the steam. This process effectively removes dissolved solids, minerals, heavy metals, bacteria, viruses, and some organic compounds, as these impurities are left behind in the boiling chamber. • A water deionizer purifies water by passing it through ion-exchange resins. These resins remove dissolved ionic impurities (cations and anions) by exchanging them for hydrogen and hydroxyl ions, respectively. Deionizers are highly effective at removing ions but do not remove non-ionic contaminants, bacteria, or particles. d) Factors to consider when choosing laboratory bench material: • Chemical Resistance: The material must withstand exposure to various acids, bases, solvents, and other chemicals without degrading or corroding. • Heat Resistance: It should be able to tolerate high temperatures from hot plates, Bunsen burners, and other heat sources without damage. • Durability and Impact Resistance: The material needs to be robust enough to resist scratches, dents, and impacts from dropped equipment. • Non-porosity: A non-porous surface prevents the absorption of liquids, making it easy to clean, sterilize, and preventing microbial growth. • Ease of Cleaning and Maintenance: The material should be simple to clean and maintain to ensure a sterile and safe working environment. • Cost: The overall budget for laboratory construction or renovation is a practical consideration. • Specific Application: The type of research or experiments conducted in the lab (e.g., biological, chemical, analytical) will influence the required properties of the bench material. That's 2 down. 3 left today — send the next one.