white phosphorus reacts with caustic soda,the products are PH3 and NaH2PO2.This reaction is an example of : (A) Oxidation (B) Reduction (C) Disproportionation (D) Neutralisation Share with your friends Share 7 Geetha answered this P4 +3 NaOH + 3 H2O → PH3 + 3 NaH2PO2Oxidation state of P in the LHS side = 0In right sidePH3x+ 3 (+1) = 0x =-3NaH2PO21 + 2 (1) + x + 2 (-2) = 0x = +1Thus from 0 oxidation state there is both reduction in the oxidation no and increase in oxidation no occur.The first reaction is reduction and second reaction is oxidation. Such type of redox reactionfrom the same molecule i.e., one undergoes oxidation and one undergoes reduction is calleddisproportionation reaction. 21 View Full Answer
