Question

4 An unknown compound is treated with
PH, gas to form brownish black
precipitate of mercuric phosphide. Find
the unknown compound formula?​

Answer 1

PH3

• In the semiconductor industry, phosphophine is used to inject phosphorus into silicon crystals.
• It's also employed as a disinfectant, a polymerization initiator, and a step in the production of a number of flame retardants.
• The stench of phosphophine is similar to that of garlic or decomposing fish, but it is odorless when pure.
• Chemical sensor tubes or meter can be used to measure phosphorus.
• The meters are more user-friendly and allow for several readings, whereas the tubes are only used once.