Law of Definite Proportions: The Empirical Formula of a Metal Oxide

Objectives:

To use the law of conservation of mass and the law of definite proportions

To calculate empirical formula of a compound

To purify the major product by converting the by-products into the major product

Curriculum alignments:

NGSS

HS-PS1-7. Use mathematical representations to support the claim that atoms, and therefore mass are conserved during a chemical reaction.

IB-DP

Structure 1.4. Counting particles by mass: The mole

4.5. Stoichiometry

AS & A Level

3.1.2.4 Empirical and molecular formula

MEB

10.1 Basic laws of chemistry and chemical calculations