How can I balance this reaction using oxidation-reduction?

[the pro]

Homework Statement

BCl₃+H₂O₂>>H₃
BO₃+HCl

Homework Equations

need to balanc it

The Attempt at a Solution

 

[symbolipoint]

That appears to be redox so you could start from the individual half-cells and balance first for the electrons. A sensible result might still be found just using balancing of numbers of atoms using the unbalanced reactants and products.

Try this: You see 3 chlorines on the left, and you see only 1 chlorine on the right. What must you do about this? What does this do the your balance of hydrogens? What more or next can you do?

 

[the pro]

That appears to be redox so you could start from the individual half-cells and balance first for the electrons. A sensible result might still be found just using balancing of numbers of atoms using the unbalanced reactants and products.

Try this: You see 3 chlorines on the left, and you see only 1 chlorine on the right. What must you do about this? What does this do the your balance of hydrogens? What more or next can you do?

i now this i made this but the problem is at (B) i can't balance this but i need to make this with an oxidation and reducation sorry for my english .i tryed this also with valenc numbers but it dosent work

 

[Borek]

B is neither reduced nor oxidized, BCl₃ just hydrolyses. The only redox here is hydrogen peroxide decomposition. This can be classifed as disproportionation reaction.

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methods

 

[the pro]

o.0 thanks got it now u right borek about BCl but i was thinkin of the preoxid and HCl about their valenz but i have it now

 

[symbolipoint]

The linewrapping distracted me and I analyzed the reaction incorrectly. At my end, the H₃ ended the line and the next stuff continued on a new line and I mistook what was seen. Not very careful thinking.

 

[the pro]

The linewrapping distracted me and I analyzed the reaction incorrectly. At my end, the H₃ ended the line and the next stuff continued on a new line and I mistook what was seen. Not very careful thinking.

yeh i now that's why i said it needs to be done with a oxido reduction beacuse it dident worked in this form