What is the electrolyte used in a lead plate storage battery?

What is the electrolyte used in a lead plate storage battery?

• A. Potassium Hydroxide
• B. Sulfuric Acid
• C. Sodium Chloride
• D. Acetic Acid

Answer: (B)

The correct answer is sulfuric acid because it serves as the essential electrolyte in lead-acid batteries, which are commonly used in automotive applications and backup power systems. In a lead-acid battery, the chemical reaction between the lead dioxide (PbO2) on the positive plate and sponge lead (Pb) on the negative plate occurs in the presence of sulfuric acid, resulting in the generation of electrical energy. When the battery discharges, sulfuric acid reacts with the lead plates to produce lead sulfate (PbSO4) and water. Conversely, when the battery is charged, this reaction is reversed, regenerating the lead plates and sulfuric acid. The concentration of sulfuric acid in the electrolyte is crucial, as it directly affects the battery's capacity and efficiency. Other substances listed, such as potassium hydroxide, sodium chloride, and acetic acid, do not provide the necessary chemical environment or reactivity to facilitate the electrochemical processes that occur in a lead-acid battery, making them unsuitable as electrolytes in this specific context.

The correct answer is sulfuric acid because it serves as the essential electrolyte in lead-acid batteries, which are commonly used in automotive applications and backup power systems. In a lead-acid battery, the chemical reaction between the lead dioxide (PbO2) on the positive plate and sponge lead (Pb) on the negative plate occurs in the presence of sulfuric acid, resulting in the generation of electrical energy.

When the battery discharges, sulfuric acid reacts with the lead plates to produce lead sulfate (PbSO4) and water. Conversely, when the battery is charged, this reaction is reversed, regenerating the lead plates and sulfuric acid. The concentration of sulfuric acid in the electrolyte is crucial, as it directly affects the battery's capacity and efficiency.

Other substances listed, such as potassium hydroxide, sodium chloride, and acetic acid, do not provide the necessary chemical environment or reactivity to facilitate the electrochemical processes that occur in a lead-acid battery, making them unsuitable as electrolytes in this specific context.