NaCl Electrolysis

To demonstrate molecular transformation and verify the law of conservation of mass, I designed a NaCl electrolysis then built it together with my team. Using carbon electrodes from pencil leads. The electrodes were positioned beneath inverted salt solution-filled jars, allowing gas to rise through plastic tubing into balloons for collection. The tube enables the experiment to separate the gasses.

During operation, streams of gas bubbles appeared. hydrogen at the cathode and chlorine at the anode, indicating that electrolysis was actively taking place. I later studied the molecular and ion change to verify the law of conservation of mass

To test the collected hydrogen, I brought a lighter close to the inflated balloon. The small volume of hydrogen ignited with a sharp, audible pop. Although the quantity was minimal, the resulting explosion was clear enough to confirm the presence and combustibility of hydrogen gas.