Chapter 9 Chemical Names and Formulas 9.1 Naming Ions 9.2 Naming and Writing Formulas for Ionic Compounds 9.3 Naming and Writing Formulas for Molecular 9.4 Naming and Writing Formulas for Acids and Bases 9.5 The Laws Governing How Compounds Form Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.

Names and Formulas of Acids contain one or more hydrogen atoms produces hydrogen ions (H+) when dissolved in water ionic compounds Examples Sulfuric Acid - H2SO4 Hydrochloric Acid - HCl https://www.youtube.com/watch?v=kcDSngXldB0 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.

Names and Formulas of Acids Binary Acid Contains 2 elements H+ and an anion HBr - Hydrobromic Acid H2S – Hydrosulfuric Acid H3P – Hydrophosphoric Acid Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.

Names and Formulas of Acids Naming Binary Acids Hydro + anion with -ic ending + acid Examples: HF hydrofluoric acid HBr hydrobromic acid Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.

Names and Formulas of Acids Writing Formulas for Binary Acids Recognize it is a binary acid (clue is the prefix hydro-) H+, identify and write the anion If charges do not equal zero, apply the criss-cross method. Examples: Hydrochloric Acid - HCl Hydronitric Acid - H3N https://www.youtube.com/watch?v=NddZ5ftQb0Q Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.

Names and Formulas of Acids Ternary Acid Contain more than 2 elements H+ and a polyatomic ion HNO3 HMnO4 H2SO4 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.

Names and Formulas of Acids Naming Ternary Acids If polyatomic ion ends in –ate, change to –ic Finish with the word acid. Acid Polyatomic Ion Acid Name HNO3 Nitrate Nitric Acid H2SO4 Sulfate Sulfuric Acid HClO3 Chlorate Chloric Acid Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.

Names and Formulas of Acids Naming Ternary Acids If polyatomic ion ends in –ite, change to –ous Finish with the word acid. Acid Polyatomic Ion Acid Name HNO2 Nitrite Nitrous Acid H2SO3 Sulfite Sulfurous Acid HClO2 Chlorite Chlorous Acid Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.

An acid that provides the crisp taste in many soft CHEMISTRY & YOU An acid that provides the crisp taste in many soft drinks has the formula H3PO4 What’s the name of this acid? Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.

An acid that provides the crisp taste in many soft CHEMISTRY & YOU An acid that provides the crisp taste in many soft drinks has the formula H3PO4 What’s the name of this acid? Phosphoric acid. http://www.sheltondentistry.com/patient-information/ph-values-common-drinks/ Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.

Names and Formulas of Acids Writing Formulas for Ternary Acids Begin with H+ Decide whether to use the polyatomic ion with the –ite or –ate ending -ous ending on the acid (-ite polyatomic ion) -ic ending on the acid (-ate polyatomic ion) If charges do not equal zero, apply the criss- cross method. Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.

Names and Formulas of Acids Writing Formulas for Ternary Acids Examples Chloric Acid Chlorous Acid Phosphorous Acid Phosphoric Acid Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.

Names and Formulas of Acids Writing Formulas for Ternary Acids Examples Chloric Acid – HClO3 Chlorous Acid – HClO2 Phosphorous Acid – H3PO3 Phosphoric Acid – H3PO4 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.

Names and Formulas of Bases produces hydroxide ions when dissolved in water. ionic compound Bases are named in the same way as other ionic compounds—the name of the cation is followed by the name of the anion. Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.

Names and Formulas of Bases LiOH – Lithium Hydroxide NaOH – Sodium Hydroxide KOH – Potassium Hydroxide Ca(OH)2 - Calcium Hydroxide Mg(OH)2 - Magnesium Hydroxide Al(OH)3 - Aluminum Hydroxide Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.

END OF 9.4 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.