DEVELOPMENT OF MICROSCALE ELECTROLYSIS MODEL USING LITHIUM CR2032 BATTERY

• Main Author: LABORA CH. S NIM:90515001, JENNY
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/28249
• Institution: Institut Teknologi Bandung

Electrolysis is one of chemistry material taught in high school that often hardly to <br /> <br /> <br /> <br /> <br /> <br /> be understood by the students. One way to improve student’s understanding about <br /> <br /> <br /> <br /> <br /> <br /> electrolysis is using a practical method. However, one of the obstacle that <br /> <br /> <br /> <br /> <br /> <br /> generally should be faced by students in their school is limited of equipment and <br /> <br /> <br /> <br /> <br /> <br /> apparatus. In this research, compiling series of micro-scale model with lithium <br /> <br /> <br /> <br /> <br /> <br /> CR2032 battery as an electric current’s source and copper plates as an electrodes <br /> <br /> <br /> <br /> <br /> <br /> has been done. These series have been tested into some of qualitative reaction <br /> <br /> <br /> <br /> <br /> <br /> such as electrolysis of water, NaCl solution, KI solution, and CuCl2 solution in <br /> <br /> <br /> <br /> <br /> <br /> standard condition. Result observed from this experiment is litmus color changing <br /> <br /> <br /> <br /> <br /> <br /> from red into blue during electrolysis of water, NaCl solution, and KI solution. <br /> <br /> <br /> <br /> <br /> <br /> Meanwhile, precipitation of copper also occurred from electrolysis of CuCl2. <br /> <br /> <br /> <br /> <br /> <br /> Beside of that, these equipment model also used for studying electric current and <br /> <br /> <br /> <br /> <br /> <br /> time effects for some amount of copper precipitation yield from electrolysis of <br /> <br /> <br /> <br /> <br /> <br /> CuCl2 solution. These equipment also has been tested to grade X of high school <br /> <br /> <br /> <br /> <br /> <br /> students. Most of the students denote that these equipment is able to be used as <br /> <br /> <br /> <br /> <br /> <br /> electrolysis micro-scale model.