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Fun Video: Molecular Formula & Empirical Formula Video Lecture | Physical Chemistry for NEET

FAQs on Fun Video: Molecular Formula & Empirical Formula Video Lecture - Physical Chemistry for NEET

1. What is the difference between molecular formula and empirical formula?

Ans. The molecular formula represents the actual number of atoms of each element in a molecule, while the empirical formula represents the simplest whole-number ratio of atoms in a compound.

2. How do you determine the molecular formula from the empirical formula?

Ans. To determine the molecular formula from the empirical formula, you need to know the molar mass of the compound. Divide the molar mass by the empirical formula mass, which will give you a whole number. Multiply the subscripts in the empirical formula by this whole number to get the molecular formula.

3. Can a compound have the same empirical and molecular formula?

Ans. Yes, a compound can have the same empirical and molecular formula if the compound consists of only one type of atom. For example, oxygen gas (O2) has both empirical and molecular formulas as O2.

4. How can the empirical formula be determined experimentally?

Ans. The empirical formula can be determined experimentally by analyzing the mass percent composition of each element in a compound. By converting the mass percent to moles and finding the simplest whole-number ratio, the empirical formula can be determined.

5. What information does the empirical formula provide about a compound?

Ans. The empirical formula provides information about the simplest ratio of atoms in a compound. It does not give information about the actual number of atoms or the molecular structure of the compound.

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