Explain the reasons for the following?
a. HF stored in copper bottles and not glass bottles
b. Sodium hypochlorite used as a disinfectant
c. Graphite acts as a lubricant
d. Lead components are added to gasoline and why was it removed with the advent of catalytic convertors
e. TEL was banned as a gasoline additive

a.

HF stored in copper bottles and not glass bottles: Hydrofluoric acid (HF) is a highly corrosive and toxic acid that can cause severe burns and tissue damage upon exposure. It reacts with glass and can weaken its structure, leading to possible leakage or breakage of the container. Therefore, HF is stored in copper bottles to avoid any reaction with the container and ensure safe storage. Copper is resistant to corrosion and can withstand the highly acidic nature of HF, making it a suitable material for storage.

b.

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