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Give the different methods of preparatio...

Give the different methods of preparation of carbon monoxide.

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Phosphine is prepared by following methods :
1) By reaction of calcium phosphide with water or dilute HCl.
`Ca_(3)P_(2) + 6H_(2)O rarr 3 Ca (OH)_(2) + 2PH_(3)`
`Ca_(3)P_(2) + 6HCl rarr 3CaCl_(2) +2PH_(3)`
ii) By heating white phosphorus with cone. NaOH solution.
`P_(4) + 3NaOH + 3H_(2)O + 3H_(2)O rarr PH_(3) + 3NaH_(2)PO_(2)`
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