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प्रश्न
What happens when white phosphorus is heated with concentrated NaOH solution in an inert atmosphere of CO2?
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उत्तर
White phosphorous dissolves in boiling NaOH solution (in a CO2 atmosphere) to give phosphine, PH3.
`P_4 + 3NaOH + 3H_2O -> PH_3 + 3NaH_2PO_2`
Phosphine Sodium hypophosphite
संबंधित प्रश्न
Out of white phosphorus and red phosphorus, which one is more reactive and why?
Which allotrope of phosphorus is more reactive and why?
Give reason for the following:
Red phosphorus is less reactive than white phosphorus.
Which allotrope of sulphur is thermally stable at room temperature ?
Which allotrope of phosphorous is most stable?
At what temperature white phosphorus changes to red phosphorus?
What is the spontaneous ignition temperature of white phosphorous?
All elements of Group 15 show allotropy except ______.
Which of the following elements does not show allotropy?
Which of the following is correct for P4 molecule of white phosphorus?
(i) It has 6 lone pairs of electrons.
(ii) It has six P–P single bonds.
(iii) It has three P–P single bonds.
(iv) It has four lone pairs of electrons.
Phosphorus has three allotropic forms — (i) white phosphorus (ii) red phosphorus and (iii) black phosphorus. Write the difference between white and red phosphorus on the basis of their structure and reactivity.
Which one of the following is formed (mainly) when red phosphorus is heated in a sealed tube at 803 K?
