Year-end Sale % OFF 
Abstract
Although electrolysis of an aqueous solution is often used to demonstrate Faraday's law, not only chemicals such as CuSO4 but also several elaborate devices such as an analytical balance, a dc power supply, and a dc ammeter are needed. In addition, a long time is required for students to obtain quantitative data. From such a viewpoint, we have developed a new educational experiment using zinc–air batteries (PR2330) and current regulative diode (CRD) arrays. Since a zinc–air battery uses the oxygen in the atmosphere as the cathode material, students were able to confirm Faraday's law of electrolysis by measuring the volume of oxygen absorbed and reacting in the battery. In addition, the combination of zinc–air batteries and CRDs made constant-current discharging possible without any dc power supply or ammeter to monitor it, which means the cost of the experiment is low and can be conducted in a classroom instead of a laboratory. Furthermore, the measurement can be accomplished in a short time (5 minutes) and the data is quantitative enough for educational purposes.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
