Chemical Process
Metallic soap (e.g. aluminium or calcium salts of fatty acids) can be used

As a foam depressant in distillation column
In hard water for cleaning of cloth
As a rust preventive
As a lubricant

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Chemical Process
The chamber process is

None of these
Non-catalytic and operates only on pyrites
A batch process for directly producing high strength (98 to 100%) H₂SO₄
Preferred over contact process for producing 98 to 100% H₂SO₄ and various oleums

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