Chemistry Quiz
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MATTER AND ITS INTERACTIONS
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A maintenance team must choose a material for a drain pipe carrying warm (50–70°C) cleaning solution that is sometimes basic (pH ~11) and sometimes mildly acidic (pH ~5). Requirements: must not corrode quickly (critical), must tolerate the temperature range, and must be reasonably affordable.
Options:
- PVC: good resistance to many acids/bases; temperature limit around 60°C for long-term use; low cost.
- CPVC: better high-temperature tolerance (~90°C); good chemical resistance; higher cost than PVC.
- Galvanized steel: strong; can corrode in acidic/basic solutions over time; moderate cost.
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