On analysis a certain compound was found to contain iodine and oxygen in the ratio of 254 gm of iodine (atomic mass 127) and 80 gm oxygen (at mass = 16). What is the formula of the compound. IO I2O I5O3 I2O5
Question
On analysis a certain compound was found to contain iodine and oxygen in the ratio of 254 gm of iodine (atomic mass 127) and 80 gm oxygen (at mass = 16). What is the formula of the compound. IO I2O I5O3 I2O5
Solution
To find the formula of the compound, we need to determine the ratio of the number of atoms, not the ratio of their masses.
- First, we calculate the number of moles of each element using the formula: number of moles = mass / atomic mass.
For iodine: number of moles = 254 gm / 127 gm/mole = 2 moles
For oxygen: number of moles = 80 gm / 16 gm/mole = 5 moles
- Then, we write the ratio of the number of moles, which gives us the subscript numbers in the formula of the compound.
The ratio of iodine to oxygen is 2:5.
Therefore, the formula of the compound is I2O5.
Similar Questions
What is the formula of the following compound? iodine dichloride
The human body contains around 0.025 g of iodine molecules, I2. Which of thefollowing shows the number of iodine atoms in 0.025 g of I2?The Avogadro constant is 6.02 × 1023 mol–1 .A 0 025126 9 6 02 10 23.. .× ×B 0 025253 8 6 02 10 23.. .× ×C 253 80 025 6 02 10 23.. .× ×D 126 90 025 6 02 10 2
A compound is found to contain 24.0 g carbon, 4.00 mol hydrogen and 1.204 × 1024 atoms of oxygen. What is the empirical formula of this compound?
An unknown element M combines with oxygen to form the compound MO2. If 36.0 g of element M combines exactly with 16.00 g of oxygen, what is the molar mass of M in g mol–1?12.072.024.016.0
Determine the mass of oxygen in 18.54 g of the organic compound, C4H10O.
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.