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The hydrogen from a chlor alkali plant is most often

  • A.burned as fuel or used to make acid
  • B.vented to the atmosphere as worthless
  • C.converted back into chlorine
  • D.sold on as a refrigerant gas

Answer: A

Correct answer: burned as fuel or used to make acid

The hydrogen is clean and comes at a useful pressure, so it is burned for steam or process heat, or combined with part of the chlorine to make hydrogen chloride and hence hydrochloric acid. Venting it wastes a saleable stream and is now unusual, and it cannot be turned back into chlorine.

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