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  4. Which of the following halogen oxide is used for estimation of carbon monoxide in automobile exhaust gases?

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Q. Which of the following halogen oxide is used for estimation of carbon monoxide in automobile exhaust gases?

NTA AbhyasNTA Abhyas 2022

Solution:

$I_{2}O_{5}$ is used for estimation of carbon monoxide in automobile exhaust gases.
$5CO+I_{2}O_{5} \rightarrow 5CO_{2}+I_{2}$
$I_{2}+2Na_{2}S_{2}O_{3} \rightarrow 2Nal+Na_{2}S_{4}O_{6}$