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Phosphine is not obtained by the reaction
- a)White P is heated with NaOH
- b)Red P is heated with NaOH
- c)Ca3P2 reacts with water
- d)Phosphorus trioxide is boiled with water
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
Phosphine is not obtained by the reactiona)White P is heated with NaOH...
Phosphine is not obtained by the reaction
Explanation:
Phosphine is a colorless, flammable, and toxic gas with a smell like that of garlic or rotten fish. It is composed of one phosphorus atom and three hydrogen atoms (PH3), and it is widely used in the semiconductor industry and as a fumigant.
The reaction that does not produce phosphine is:
Red P is heated with NaOH
Let's see why the other options are incorrect:
a) White P is heated with NaOH: This reaction produces phosphine gas along with other products. The balanced equation is:
3NaOH + P4 → PH3 + 3NaH2PO2
b) Red P is heated with NaOH: This reaction does not produce phosphine gas. The balanced equation is:
2NaOH + P4O10 → 4NaHPO3
c) Ca3P2 reacts with water: This reaction produces phosphine gas. The balanced equation is:
Ca3P2 + 6H2O → 3Ca(OH)2 + 2PH3
d) Phosphorus trioxide is boiled with water: This reaction produces phosphoric acid, but not phosphine gas. The balanced equation is:
P4O6 + 6H2O → 4H3PO3
Therefore, the correct answer is option B: Red P is heated with NaOH, as this reaction does not produce phosphine gas.
Explanation:
Phosphine is a colorless, flammable, and toxic gas with a smell like that of garlic or rotten fish. It is composed of one phosphorus atom and three hydrogen atoms (PH3), and it is widely used in the semiconductor industry and as a fumigant.
The reaction that does not produce phosphine is:
Red P is heated with NaOH
Let's see why the other options are incorrect:
a) White P is heated with NaOH: This reaction produces phosphine gas along with other products. The balanced equation is:
3NaOH + P4 → PH3 + 3NaH2PO2
b) Red P is heated with NaOH: This reaction does not produce phosphine gas. The balanced equation is:
2NaOH + P4O10 → 4NaHPO3
c) Ca3P2 reacts with water: This reaction produces phosphine gas. The balanced equation is:
Ca3P2 + 6H2O → 3Ca(OH)2 + 2PH3
d) Phosphorus trioxide is boiled with water: This reaction produces phosphoric acid, but not phosphine gas. The balanced equation is:
P4O6 + 6H2O → 4H3PO3
Therefore, the correct answer is option B: Red P is heated with NaOH, as this reaction does not produce phosphine gas.
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Community Answer
Phosphine is not obtained by the reactiona)White P is heated with NaOH...
Red P does not react with NaOH to give PH3.
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Phosphine is not obtained by the reactiona)White P is heated with NaOHb)Red P is heated with NaOHc)Ca3P2 reacts with waterd)Phosphorus trioxide is boiled with waterCorrect answer is option 'B'. Can you explain this answer?
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