Question

On analysis a certain compound was found to contain iodine and oxygen in the ratio of 254 g of iodine (at. mass 127) and 80 g oxygen (at. mass16). What is the formula of the compound ?

• A. $IO$
• B. $I_2O$
• C. $I_5O_3$
• D. $I_2O_5$

Answer 1

Answer: (D)

$I_2O_5$

Answer 2

Moles of iodine $=\frac{247}{127}=2$ Moles of oxygen $=80/16=5$ Formula $=I_{2}O_{5}$