Question

On heating with concentrated \[\ce{NaOH}\] solution in an inert atmosphere of \[\ce{CO2}\], white phosphorus gives a gas. Which of the following statement is incorrect about the gas?

विकल्प

• It is highly poisonous and has smell like rotten fish.

• It’s solution in water decomposes in the presence of light.

• It is more basic than \[\ce{NH3}\].

• It is less basic than \[\ce{NH3}\].

Answer 1

It is more basic than \[\ce{NH3}\].

Explanation:

When heated with concentrated \[\ce{NaOH}\] in an inert \[\ce{CO2}\] environment. It forms

\[\ce{PH3P4 + 3NaOH + 3H2O -> PH3 + 3NaH2PO2}\]

As we progress from the top to the bottom in a group, the basic character of hydrides reduces \[\ce{PH3}\] is basic than NH₃.