Answer:
Empirical formula is H₃PO₄
Explanation:
Given data:
Percentage of hydrogen = 3%
Percentage of P = 32%
Percentage of oxygen = 65%
Empirical formula = ?
Solution:
Number of gram atoms of H = 3 / 1= 3
Number of gram atoms of O = 65 / 16 = 4.06
Number of gram atoms of P = 32 / 31 = 1.03
Atomic ratio:
H : P : O
3/1.03 : 1.03/1.03 : 4.06/1.03
3 : 1 : 4
H : P : O = 3 : 1 : 4
Empirical formula is H₃PO₄.
