P4+3NaOH+3H2O→(x)3NaH2PO2+PH3
NaH2PO2+HCl→NaCl+(Y)H3PO2
White phosphorus on reaction with concentrated NaOH solution in an inert atmosphere of CO2 gives phosphine and compound (X).(X) on acidification with HCl gives compound (Y). The basicity of compound (Y) is:
Held on 8 Jan 2020 · Verified 6 Jul 2026.
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Work through every JEE Main Inorganic Chemistry PYQ, year by year.