On heating with concentrated NaOH solution in an inert atmosphere of CO2, white phosphorus gives a gas. Which of the following statements is incorrect about the gas?
(i) It is highly poisonous and smells like rotten fish.
(ii) It’s solution in water decomposes in the presence of light.
(iii) It is more basic than NH3.
(iv) It is less basic than NH3.
On heating with concentrated NaOH solution in an inert atmosphere of CO2, white phosphorus gives a gas. Which of the following statements is incorrect about the gas?
(i) It is highly poisonous and smells like rotten fish.
(ii) It’s solution in water decomposes in the presence of light.
(iii) It is more basic than NH3.
(iv) It is less basic than NH3.
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1 Answer
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This is a multiple choice answer as classified in NCERT Exemplar
Correct option is (iii)
When heated with concentrated NaOH in an inert CO2 environment. It formsPH3
P4 + 3NaOH + 3H2O→PH3 + 3NaH2PO2
As we progress from the top to the bottom in a group, the basic character of hydrides reduces PH3 is basic than NH3.
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