Acids and Bases How do acids and bases behave in water? Why? Acids and bases play an important role in our lives. Numerous biological processes, industrial applications, and even environmental problems are a function of the acidity or basicity (alkalinity) of aqueous solutions. It is therefore important to understand what makes a substance behave as an acid or a base when dissolved in water. In this activity, we will explore the physical and chemical properties of acids and bases. Model 1 Arrhenius Acids and Bases – Common Name for Chemical Turns Conducts Acid Found in… Aqueous Solution Formula Litmus Electricity? or Tastes… Base Paper… Acetic acid Vinegar Sour Red Yes Acid HC2H3O2(aq) Benzoic acid Food preservative Sour Red Yes Acid HC7H5O2(aq) Phosphoric acid Soda pop Sour Red Yes Acid H3PO4(aq) Hydrochloric acid HCl( aq) Stomach acid Sour Red Yes Acid Citric acid Citrus fruits Sour Red Yes Acid Ascorbic acid Vitamin C Sour Red Yes Acid Magnesium hydroxide Milk of magnesia Bitter Blue Yes Base Mg(OH)2(aq) Aluminum hydroxide Antacids Bitter Blue Yes Base Al(OH)3(aq) Barium hydroxide Lubricants POISON Blue Yes Base Ba(OH)2(aq) Sodium hydroxide NaOH(aq) Drain cleaner POISON Blue Yes Base 1. Refer to Model 1. What is the common chemical name for Vitamin C? Is Vitamin C classified as an acid or a base? 2. Examine the properties of the Arrhenius acids in Model 1. List three properties that all Arrhenius acids have in common. 3. Examine the chemical formulas for the Arrhenius acids in Model 1. What feature do all the Arrhenius acid chemical formulas have in common? 4. Examine the properties of the Arrhenius bases in Model 1. List two properties that all Arrhenius bases have in common.
Acids and Bases How do acids and bases behave in water? Why? Acids and bases play an important role in our lives. Numerous biological processes, industrial applications, and even environmental problems are a function of the acidity or basicity (alkalinity) of aqueous solutions. It is therefore important to understand what makes a substance behave as an acid or a base when dissolved in water. In this activity, we will explore the physical and chemical properties of acids and bases. Model 1 – Arrhenius Acids and Bases Common Name for Aqueous Solution Chemical Formula Found in… Tastes… Turns Litmus Paper… Conducts Electricity? Acid or Base Acetic acid HC2H3O2(aq) Vinegar Sour Red Yes Acid Benzoic acid HC7H5O2(aq) Food preservative Sour Red Yes Acid Phosphoric acid H3PO4(aq) Soda pop Sour Red Yes Acid Hydrochloric acid HCl( aq) Stomach acid Sour Red Yes Acid Citric acid Citrus fruits Sour Red Yes Acid Ascorbic acid Vitamin C Sour Red Yes Acid Magnesium hydroxide Mg(OH)2(aq) Milk of magnesia Bitter Blue Yes Base Aluminum hydroxide Al(OH)3(aq) Antacids Bitter Blue Yes Base Barium hydroxide Ba(OH)2(aq) Lubricants POISON Blue Yes Base Sodium hydroxide NaOH(aq) Drain cleaner POISON Blue Yes Base 1. Refer to Model 1. What is the common chemical name for Vitamin C? Is Vitamin C classified as an acid or a base? 2. Examine the properties of the Arrhenius acids in Model 1. List three properties that all Arrhenius acids have in common. 3. Examine the chemical formulas for the Arrhenius acids in Model 1. What feature do all the Arrhenius acid chemical formulas have in common? 4. Examine the properties of the Arrhenius bases in Model 1. List two properties that all Arrhenius bases have in common.
acids_and_bases_behavior_in_water.docx