Answer:
Empirical formula is HClOâ‚„.
Explanation:
Given data:
Percentage of hydrogen = 1.01%
Percentage of chlorine = 35.29%
Percentage of oxygen = 100- (35.29%+1.01%) = 63.7%
Empirical formula = ?
Solution:
Number of gram atoms of H = 1.01 / 1.01 = 1
Number of gram atoms of Cl = 35.29 / 35.5 = 1
Number of gram atoms of O = 63.7 / 16 = 4
Atomic ratio:
      H        :     Cl      :      O
      1/1        :     1/1       :    4/1
      1        :      1        :     4
H : Cl : O = 1 : 1 : 4
Empirical formula is HClOâ‚„.