Question

Which poisonous gas is evolved when white phosphorus is heated with concentrated naoh solution?

Answer 1

Hello dear..

When phosphorous reacts with NaOH, it produce phosphine and Sodium hypophosphite. Phosphine is a gas which is evolved when white phosphorous is heated with conc. NaOH solution. It is a colourless, odourless gas..and it is also very poisonous gas..

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Answer 2

Phosphine(Ph3) is produced...

It is a colourless and odourless gas...