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Suggest a quantitative method for estimation of the gas which protects us from UV rays of the sun.

 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:

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The gas is ozone.

Quantitative method is to react ozone with I2and then react the I2with Na2S2O3.

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the gas is ozone .

when ozone is reacted with excess of potassium iodide solution buffered with borate buffer , then iodine vapours are liberated which can titrated against the standard solution of sodium thiosulphate. This is quantitative method for estimation of ozone gas.

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