Department of Pre-University Education, KarnatakaPUC Karnataka Science Class 12
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which poisonous gas is evolved when white phosphorus is heated with conc. NaOH solution? Write the chemical equation involved - Chemistry

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which poisonous gas is evolved when white phosphorus is heated with conc. NaOH solution? Write the chemical equation involved.

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Solution

On heating with caustic soda solution, white phosphorus forms poisonous gas phosphine.

P4 + 3NaOH + 3H2O  PH3 + NaH2PO2

Concept: P - Block Group 15 Elements - Phosphine
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