Question

What mass in grams of KClO₃(s) is produced when 2 moles of KClO₃(s) are completely reacted according to the following chemical equation: 2KClO₃(s) → 2KCl(s) + 3O₂(g)?

Answer 1

The mass of KClO₃(s) produced from 2 moles of KClO₃(s) is 245.10 grams, based on its molar mass of 122.55 g/mol with a 1:1 stoichiometric ratio.

Step-by-step explanation:

To calculate the mass in grams of KClO₃(s) produced when 2 moles of KClO₃(s) are reacted, you can use the molar mass of KClO₃(s) which is 122.55 g/mol. Since the chemical equation 2KClO₃(s) → 2KCl(s) + 3O₂(g) indicates a 1:1 ratio between reactants and products, 2 moles of KClO₃(s) would produce 2 moles of KCl(s). The calculation is straightforward:

Mass KClO₃ = moles KClO₃ × molar mass KClO₃ = 2 mol × 122.55 g/mol = 245.10 grams of KClO₃