Question

Difference between molecular formula and empirical formula.
$two \: points$

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Answer 1

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Empirical Formula :

1. The empirical formula of a compound gives the simplest ratio of the number of different atoms present.
2. If the formula is simplified then it is an empirical formula.

Molecular Formula :

1. The molecular formula gives the actual number of each different atom present in a molecule.
2. The molecular formula is commonly used and is a multiple of the empirical formula.

Answer 2

Molecular formula:

▪︎The molecular formula gives the actual number of each different atom present in a molecule.

▪︎A molecular formula uses a subscript that reports the actual number of each type of atom in a molecule of the compound.

Example: For Acetylene the empirical formula is C2H2

Empirical formula :

▪︎The empirical formula of a compound gives the simplest ratio of the number of different atoms present.

▪︎An empirical formula for a compound is the formula of a substance written with the smallest integer subscript.

Example: For Acetylene the empirical formula is CH.

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