The reaction of white phosphorus with aqueous NaOH gives phosphine along with another phosphorus containing compound. The reaction type, the oxidation states of phosphorus in phosphine and the other product are respectively:
redox reaction; −3 and−5
redox reaction; +3 and +5
disproportionation reaction; −3 and +5
disproportionation reaction; −3 and +3
A
disproportionation reaction; −3 and +5
B
disproportionation reaction; −3 and +3
C
redox reaction; −3 and−5
D
redox reaction; +3 and +5
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Solution
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0P4+3NaOH+3H2O→−3PH3+3NaH2+1PO2
The salt NaH2PO2 undergoes the following changes on heating.
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