Question

Which of these would support the idea that mass is conserved in a reaction that produces gas as a product?

• A. Heating the reactants to ensure the reaction occurs in a gaseous state.
• B. Subtracting the mass of the gas from the mass of the solid and liquid products.
• C. Mixing the reactants and measuring their total mass.
• D. Trapping the gas and measuring its mass.

Answer 1

The correct option is D Trapping the gas and measuring its mass.

As gas can escape after reaction so after its release trap the gas and finding its mass so that it will be in accordance with the law of conservation of mass.