KCET2015ChemistryAmines
On heating with concentrated ( NaOH ) solution in an inert atmosphere of ( CO ₂ ), white phosphorous gives a gas. Which of the following statements is incorrect about the gas?
Options
- AIt is less basic than ( NH ₃ )
- BIt is more basic than ( NH ₃ ).
- CIt is highly poisonous and has smell like rotten fish.
- DIt's solution in water decomposes in the presence of light.
Correct answer
B. It is more basic than ( NH ₃ ).
Step-by-step solution
( P ₄+3 NaOH +3 H ₂ O - CO ₂ >3 ~N a H ₂ PO ₂+ PH ₃ ) (phosphine) ( PH ₃ ) is less basic than ( NH ₃ ) because lone pairs of electrons are less available in ( PH ₃ ) and ( NH ₃ ) due to larger size of the phosphorous than nitrogen.