Question

An oxide of iodine (I = 127) contains 254 grams of
iodine and 8 grams of oxygen. Its formula could be
1) I2O3
2) I2O
3) I2O5
4) I2O7​

Answer 1

3) I2O5 is the oxide .

Explanation:

I molar mass = 127  GIVEN

iven, 25.425.4 g iodine combines with 88 g oxygen.

Therefore, 254254 g iodine binds with 8080 g oxygen.

The ratio of moles I:O = 2:5I:O=2:5

So, oxide is I2O5