10: Moles and Stoichiometry
- Page ID
- 288477
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- 10.1: The Mole
- A mole is \(6.022 \times 10^{23}\) things.
- 10.2: Atomic and Molar Masses
- The mass of moles of atoms and molecules is expressed in units of grams.
- 10.3: Mole-Mass Conversions
- It is possible to convert between moles of material and mass of material.
- 10.4: Mole-Mole Relationships in Chemical Reactions
- The balanced chemical reaction can be used to determine molar relationships between substances.
- 10.5: Mole-Mass and Mass-Mass Problems
- A balanced chemical equation can be used to relate masses or moles of different substances in a reaction.
- 10.6: Solution Concentration- Molarity
- Another way of expressing concentration is to give the number of moles of solute per unit volume of solution. Of all the quantitative measures of concentration, molarity is the one used most frequently by chemists. Molarity is defined as the number of moles of solute per liter of solution. The symbol for molarity is MM or moles/liter. Chemists also use square brackets to indicate a reference to the molarity of a substance.
- 10.8: Solution Stoichiometry
- Double replacement reactions involve the reaction between ionic compounds in solution and, in the course of the reaction, the ions in the two reacting compounds are “switched” (they replace each other). Because these reactions occur in aqueous solution, we can use the concept of molarity to directly calculate the number of moles of reactants or products that will be formed, and hence their amounts (i.e. volume of solutions or mass of precipitates).