Question

The elements X and Y forms compound that is 66.67% X and 33.33% Y by mass. The atomic mass of C is twice that of Y. What is the empirical formula of the compound?

Answer 1

Answer:

XY2

Explanation:

will be its emperical formula

Answer 2

Given: X = 66.67%

           Y = 33.33%

           The atomic mass of X is twice that of Y

To find: Empirical formula of the compound

Solution: The empirical formula of a chemical compound is the simplest whole-number ratio of atoms present in a compound.

Since the compound has 66.67% X, and 33.33% Y,

Therefore there should be 2 parts of X and one part of Y.

The atomic mass of X is twice that of Y, so the empirical compound of the compound will be X₂Y.

Therefore, the empirical formula of the compound will be X₂Y.

• Empirical formula gives the proportions of the elements present in a compound but not the actual numbers or arrangement of atoms.
• It does not represents the actual numbers or arrangement of atoms.