1. Tardigrade
  2. Question
  3. Chemistry
  4. On analysis, a certain compound was found to contain iodine and oxygen in the ratio of 254 g of iodine and 80 g of oxygen. The atomic mass of iodine is 127 and that of oxygen is 16. Which of the following is the formula of the compound?

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Q. On analysis, a certain compound was found to contain iodine and oxygen in the ratio of $254 \,g$ of iodine and $80 \,g$ of oxygen. The atomic mass of iodine is $127$ and that of oxygen is $16$. Which of the following is the formula of the compound?

Chemical Bonding and Molecular Structure

Solution:

Compound has $254\, g$ of $I_2$ mean $\frac{254}{127} = 2$ moles, while $80 \,g \, O_2$ means $\frac{80}{16} = 5$ moles so they will form compound $I_2O_5$.