Balancing A Redox Reaction

Step 1: Understand redox reactions A redox reaction involves both reduction and oxidation processes. Oxidation is the loss of electrons, and reduction is the gain of electrons. Step 2: Identify the oxidation and reduction in each option Let's analyze each option: - In option (1), and are reacting. Here, hydrogen is oxidized (loses electrons) and chlorine is reduced (gains electrons). This is a redox reaction. - In option (2), forms , which is a double displacement reaction but not a redox reaction. - In option (3), this is the combustion of ethanol, which is a redox reaction. - In option (4), the combination of hydrogen and oxygen to form water is also a redox reaction. Answer: Therefore, option (1) represents a redox reaction, where hydrogen is oxidized and chlorine is reduced. So, the correct answer is option (1).