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.