Chapter 12, Problem 85A

Interpretation Introduction

Interpretation : The road map ties into the summary of steps for stoichiometric problems to be explained.

Concept Introduction : The mole idea is a useful way to indicate how much of a substance there is. The term "mole" refers to the quantity of a substance that contains the same number of elementary particles (ions, molecules, or atoms) as there are carbon atoms.

Answer to Problem 85A

The road map ties into the summary of steps for stoichiometric problems in the relationship between moles, representative particles, mass, and volume of gas at STP.

Explanation of Solution

The quantitative analysis of the reactants and products involved in a chemical reaction is known as stoichiometry.

The mole road map gives the relationship between the mole and volume of gas at STP, mole and representative particles, and mole and mass.

In stoichiometric problems, steps give the relationship between the mole ratio and volume of gas at STP, mole ratio and representative particles, and mole ratio and mass.

Here, the given quantity is converted into the wanted quantity.

The conversion in the road map and stoichiometric problems are similar.

In stoichiometric problems, there is also information on the conversion of one substance to another.

But in the stoichiometric problem, when one quantity of the substance is given it can be changed into another quantity of another substance.