Question

i) Draw the structure of phosphinic acid (H3PO2).(ii) Write a chemical reaction for its use as reducing agent.(iii) Suggest a quantitative method for estimation of gas which protect us from uv rays

Answer 1

Hypophosphorous acid (phosphinic acid) has the following structure: 

 

Structure of phosphinic acid (Hypophosphorous acid)  

 

16Hraise to power positive sign + 2Cr2O7 raise to power 2 minus + 3H3PO2 ---> 3H3PO4 + 4Cr raise to power 3 + 8H2O