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Question 25

Since all fuels contain some amount of sulfur, sulfuric and sulfurous acid __________ can occur if the metal temperature is below this temperature.

    Correct Answer: C

    Sulfuric and sulfurous acid dew point corrosion can occur if the metal temperature falls below the dew point temperature. This phenomenon happens because the acids condense from the vapor phase at temperatures below the dew point, initiating corrosive processes on the metal surface.

Discussion
ahmadmmOption: C

Since all fuels contain some amount of sulfur, sulfuric and sulfurous acid dew point corrosion can occur if the metal temperatures are below the dew point