Which of the following is/are the characteristics of the vapor phase inhibitor?(a) It has a very high vapor pressure(b) Inhibit the atmospheric corrosion without being contact with the metal surface(c) Effective in closed spaces(d) It has very high vapor pressure, inhibit atmosphere corrosion without being contact with the metal surface and very effective in closed spacesThis question was posed to me in my homework.My query is from Corrosion Prevention topic in chapter Corrosion Prevention of Corrosion Engineering

Which of the following is/are the characteristics of the vapor phase i

1.	Which of the following is/are the characteristics of the vapor phase inhibitor?(a) It has a very high vapor pressure(b) Inhibit the atmospheric corrosion without being contact with the metal surface(c) Effective in closed spaces(d) It has very high vapor pressure, inhibit atmosphere corrosion without being contact with the metal surface and very effective in closed spacesThis question was posed to me in my homework.My query is from Corrosion Prevention topic in chapter Corrosion Prevention of Corrosion Engineering
Answer» The CORRECT choice is (d) It has very high vapor pressure, inhibit atmosphere corrosion without being contact with the METAL surface and very effective in closed SPACES For explanation I would say: Vapor-phase INHIBITORS are very similar to organic adsorption-type inhibitors. Characteristics of vapor-phase inhibitors are: i. It has a very high vapor pressure ii. Inhibit the ATMOSPHERIC corrosion without being contact with the metal surface iii. Effective in closed spaces.

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