A pink coloured dye complex is formed when air containing NO2 is passed in an absorbing solution consisting of __________ and diamine dissolved in acetic acid medium.
A. Sulphuric acid
B. Sulphonyl
C. Sulphonic acid
D. Sulphanilic acid
Answer:D
A pink coloured dye complex is formed when air containing NO2 is passed in an absorbing solution consisting of __________ and diamine dissolved in acetic acid medium.
A. Sulphuric acid B. Sulphonyl C. Sulphonic acid D. Sulphanilic acid
Explanation: A pink coloured dye complex is formed when air containing NO2 is passed in an absorbing solution consisting of sulphanilic acid and diamine dissolved in acetic acid medium. This is called Saltzman method.