Exploring the Composition of Hydrogen Peroxide
What is the molar mass of hydrogen peroxide, H2O2?
a. 18 g/mol
b. 34 g/mol
c. 46 g/mol
d. 64 g/mol
Answer:
The correct answer is b. 34 g/mol
Hydrogen peroxide, with the chemical formula H2O2, consists of two hydrogen atoms, two oxygen atoms, and has a molar mass of 34 g/mol. This is calculated by adding the atomic masses of hydrogen (1 g/mol) and oxygen (16 g/mol), then multiplying by the respective number of atoms in the molecule.
Therefore, the molar mass of hydrogen peroxide is 2(1 g/mol) + 2(16 g/mol) = 34 g/mol.
Understanding the molar mass of a compound is essential in various chemical calculations, including determining quantities in chemical reactions and stoichiometry.