In the disproportion reaction: H3PO2 → PH3 + H3PO3 The equivalent mass of H3PO2 is (m = molecular mass of H3PO2):
Correct answer: A. 3m/4
- A. 3m/4
- B. 3m/5
- C. 5m/6
- D. m/4
Explanation
FAs can be seen from the above reaction,The equivalent weight of this reaction can be calculated as molecular mass divided by n factor.where n factor is the number of moles of electron lost or gained per mole of the reactant. (during oxidation and reduction respectively).For,H3+1PO2→−3PH3Equivalent weight =m/4For, H3+1PO2→H3+3PO3Equivalent weight =m/2Hence,The equivalent weight of H3PO2=m/4+m/2=3m/4
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