Question

Which chemical equation best represents the Law of Conservation of

Answer 1

2H₂ + O₂ ⇒ 2H₂O

Further explanation

Conservation of mass states that

In a closed system, the masses before and after the reaction are the same

So it can be concluded

• mass of the reactants = mass of the products

• mass cannot be created or destroyed

• The number of atoms involved in a reaction remains the same⇒ number of moles also the same
• chemical equation in balanced form

So let's see which of the several options , which one has the same number of atoms on both sides of the equation

2H₂ + O₂ ⇒ 2H₂O

H ⇒ left 4, right 4

O ⇒ left 2, right 2

so the equation is in balance and represents the Law of Conservation of

Mass