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Nupur Lala
Asked: 2022-11-02T19:45:15+05:30 In:

What is the equivalent weight of `P` in the following reaction?
`P_(4)+NaOH rarr NaH_(2)PO_(2)+PH_(3)`
A. `(31)/(4)`
B. `(31)/(3)`
C. `(31)/(2)`
D. `31xx4//3`

What is the equivalent weight of `P` in the following reaction?
`P_(4)+NaOH rarr NaH_(2)PO_(2)+PH_(3)`
A. `(31)/(4)`
B. `(31)/(3)`
C. `(31)/(2)`
D. `31xx4//3`
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1 Answer

  1. Correct Answer – D
    `P_(4) rarr NaH_(2)PO_(2)`
    `(P_(4))^(@) rarr 4P^(+)+4e^(-)`
    `:. ` Eq. wt. (Reductant) `=(P_(4))/(4)`
    `(P_(4))^(@)+12e rarr 4p^(3-)`
    `:.` Eq.wt.(Oxidant)`=(P_(4))/(12)`
    `:.` Eq. wt. `(P_(4))=(P_(4))/(12)+(P_(4))/(12)`
    `=P_(4)xx(16)/(48)=(4xx31)/(3)=31xx(4)/(3)`

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