Dilute sulfuric acid acting as electrolyte in a lead-acid cell roughly comprises__________?
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Answer: C. three parts H2O, one part H2SO4
Explanation
Dilute sulfuric acid electrolyte requires a precise volumetric water-to-acid mixing ratio. Standard lead-acid cells use approximately three parts water to one part concentrated acid. This specific ratio optimizes electrical conductivity and chemical reaction rates. Concentrated sulfuric acid is extremely corrosive and reacts violently with pure water. Mixing acid requires pouring acid slowly into water to dissipate heat safely. Electrolyte density directly affects battery performance and freezing point limits.
Battery manufacturing plants mix electrolyte solutions under strict temperature controls. Technicians preparing dry-charged batteries must follow exact volumetric dilution ratios. Incorrect acid concentrations can corrode internal plates and shorten battery life. Three parts acid and one part water would create an excessively concentrated, dangerous mixture. Equal parts water and acid would exceed standard density specifications for cells. Using pure acid without water would destroy internal cell plates immediately.
- Subject
- Engineering
- Category
- Electrical Engineering
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- —
- Difficulty
- medium
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