Common gases used in laboratories are generally obtained from pressurized metal gas cylinders, but for small amounts of occasionally-used gases, it is sometimes easier just to prepare them chemically.For example, oxygen gas can be prepared by heating KMnO₄(s)according to the following chemical reaction:
2KMnO₄(s) $\rarr$ K₂MnO₄(s)+ MnO₂(s)+ O₂(g)
How many grams of KMnO₄ would you need to produce 0.27 moles of O₂, assuming 100% conversion? The molar mass of KMnO₄ is 158.034 g/mol.

Question

Common gases used in laboratories are generally obtained from pressurized metal gas cylinders, but for small amounts of occasionally-used gases, it is sometimes easier just to prepare them chemically.For example, oxygen gas can be prepared by heating KMnO₄(s)according to the following chemical reaction:
2KMnO₄(s)

\rarr

K₂MnO₄(s)+ MnO₂(s)+ O₂(g)
How many grams of KMnO₄ would you need to produce 0.27 moles of O₂, assuming 100% conversion? The molar mass of KMnO₄ is 158.034 g/mol.

Quizplus · Accepted Answer

The Answer of Common gases used in laboratories are generally obtained from pressurized metal gas cylinders, but for small amounts of occasionally-used gases, it is sometimes easier just to prepare them chemically.For example, oxygen gas can be prepared by heating KMnO₄(s)according to the following chemical reaction: 2KMnO₄(s)$\rarr$ K₂MnO₄(s)+ MnO₂(s)+ O₂(g) How many grams of KMnO₄ would you need to produce 0.27 moles of O₂, assuming 100% conversion? The molar mass of KMnO₄ is 158.034 g/mol.

Common Gases Used in Laboratories Are Generally Obtained from Pressurized →\rarr→

Common Gases Used in Laboratories Are Generally Obtained from Pressurized $\rarr$