Question

Balance the following redox reactions
1. P4+OH- -->PH3+HP02-
2.Cl2O7+H2O2 -->ClO2- + O2+ H+

Answer 1

. P4+6OH- --> PH3+3HP02-

Answer 2

@chmvijay Here I got the oxidation no of P in PH3 as -3 and that of p in HPO2- as1.Then which one should i consider as oxidation?

Answer 3

Can you explain the steps?

Answer 4

The question is to be answered either through ion exchange method or oxidation no method.

Answer 5

HPO2- how do calculated the oxidation sate to be +1 its +3 i think

Answer 6

yes. sorry its +3
.

Answer 7

then what about my doubt ?

Answer 8

what doubt

Answer 9

can you explain the steps to balance it?

Answer 10

wt is toal negative charge on left side

Answer 11

i mean the steps to balance the equation?

Answer 12

6OH_ mean total charge is -6 since P4 is neutral charge is zero
hence total charge on left hand side of eqn is -6

Answer 13

we should chose in such way that right hand side also the charge should be -6