Question
True or false?You can follow the progress of a reaction that produces a gas using a sensitive mass balance , because the mass of the reaction vessel increases as the gas is produced. true false
Answer
4
(195 Votes)
Hudson
Master · Tutor for 5 years
Answer
B. false
Explanation
This statement is incorrect. When a reaction produces a gas, the added mass the gas contributes is not detectable by the increase in mass of the reaction vessel.Vessel holds the reaction system where a chemical reaction giving out gas takes place. If we suppose a sealed vessel, when a gas evolves in a reaction, the mass of the vessel plus reaction will not increase. It is due to the law of conservation of mass that states that matter cannot be created or destroyed in an isolated system. Hence, the evolved gas should not increase the mass of reaction vessel. Therefore, you cannot effectively track the progress of a reaction that produces a gas with just a plain mass balance.