Exam API-571 All QuestionsBrowse all questions from this exam
Question 58

Dew point corrosion can occur if the metal temperature is below the dew point. The dew point of sulfuric acid is __________.

    Correct Answer: A

    The dew point of sulfuric acid is typically around 280º F (140º C). This is the temperature below which sulfuric acid vapors will condense from the gas phase to the liquid phase, causing potential corrosion issues if metal surfaces are cooler than this temperature.

Discussion
ahmadmmOption: A

The dew point of sulfuric acid depends on the concentration of sulfur trioxide in the flue gas but is typically about 280 °F (140 °C).