give the answer of statement in the form of chemical equation --when ozone react with an excess of potassium iodide - Chemistry - The p-Block Elements

Question

give the answer of statement in the form of chemical equation
--when ozone react with an excess of potassium iodide solution
buffered with a borate buffer (pH9 2) iodine is liberated which can
be titrated against a standard solution of sodium thiosulphate

Avni · Accepted Answer

Quantitatively, ozone can be estimated with the help of
potassium iodide When ozone is made to react with potassium iodide
solution buffered with a borate buffer (pH 9 2), iodine is
liberated This liberated iodine can be titrated against a standard
solution of sodium thiosulphate using starch as an indicator The
reactions involved in the process are given below

2I- + H2O + O3 →
2OH- + I2 + O2
I2 + 2Na2S2O3 →
Na2S4O6 + 2NaI

give the answer of statement in the form of chemical equation --when ozone react with an excess of potassium iodide solution buffered with a borate buffer (pH9.2) iodine is liberated which can be titrated against a standard solution of sodium thiosulphate .