Battery electrolyte is a mixture of water and which of the following substances?

• A. Glucose (C_6H_{12}O_6)
• B. Sodium chloride (NaCl)
• C. Ammonia (NH_3)
• D. Sulfuric acid (H_2SO_4)

Answer: (D)

Verified step by step guidance

1. Understand that a battery electrolyte is a substance that conducts electricity by allowing ions to move between the electrodes of the battery.
2. Recall that common battery electrolytes are typically aqueous solutions containing ions that facilitate electrical conductivity.
3. Evaluate the given options: Glucose (C_6H_{12}O_6) is a sugar and does not dissociate into ions in water, so it is not suitable as an electrolyte.
4. Sodium chloride (NaCl) does dissociate into ions in water, but it is not commonly used as a battery electrolyte in typical lead-acid or similar batteries.
5. Sulfuric acid (H_2SO_4) is a strong acid that dissociates completely in water, providing a high concentration of ions, making it the correct choice for a battery electrolyte.