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Question

Which of the following oxide of iodine is used in the estimation of carbon monoxide?


A

I2O4

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B

I2O5

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C

I2O6

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D

I2O7

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Solution

The correct option is B

I2O5


Explanation of the correct option:

(B) I2O5

  • I2O5 is used for the determination of carbon monoxideCO in the gaseous condition and gives carbon dioxideCO2 and solid iodineI2.
  • The chemical reaction can be depicted as:

I2O5s+5COgI2s+5CO2g

Explanation of incorrect options:

(A) I2O4

  • I2O4 is decomposes at 100C and is not used in the estimation of carbon monoxideCO.

(C) I2O6

  • I2O6 does not react with carbon monoxide CO.

(D) I2O7

  • I2O7 is acidic and it reacts with water and forms periodic acid.

Hence, option (B) is correct., I2O5 oxide of iodine is used in the estimation of carbon monoxide.


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