🔍 Key Concepts

• Electrolysis of water in lead-acid batteries during charging • Typical gases produced by charging lead-acid batteries • Which industrial processes actually produce chlorine gas

💭 Think About

• Think about what happens to water (H₂O) inside the battery when you overcharge or charge at a high rate. • Which gas is commonly associated with explosion hazards around battery compartments on vessels? • Is chlorine gas normally associated with batteries, or with something else like swimming pools, bleach, or certain industrial chemical processes?

✅ Before You Answer

• Know which gas is colorless, odorless, and highly explosive when mixed with air. • Recall which gas is commonly ventilated from battery rooms on ships for safety. • Eliminate any options that describe chemical processes not typical of a standard lead-acid storage battery.