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Solutions of Acids and Bases Chapter 10 - 3

Solutions of Acids and Bases Chapter 10 - 3. Strengths of Acids and Bases. Strong versus weak acids and bases The strength of it depends on the number of molecules that break apart when the acid or base is dissolved in water.

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Solutions of Acids and Bases Chapter 10 - 3

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  1. Solutions of Acids and BasesChapter 10 - 3

  2. Strengths of Acids and Bases • Strong versus weak acids and bases • The strength of it depends on the number of molecules that break apart when the acid or base is dissolved in water. • Strong: Most of the HCl breaks apart in water HCl  H+ + Cl- • Weak: Only some of the Ca(OH)2 break apart Ca(OH)2  Ca++ + 2(OH-)

  3. Acids, Bases and Neutralization • H+ + OH-  H2O • Acid + Base = Water (Neutral) • Water is formed when the hydrogen ions from the acid react with hydroxide ions from the base.

  4. - bases have a pH above 7, the higher the number the stronger the base - acids have a pH below 7, the lower the number the stronger the acid

  5. pH and the Environment - Living things depend on having a steady pH in their environment. -Rain is usually slightly acidic. Acid rain can be as low as 3 on the pH scale.

  6. Salts • When an acid neutralizes a base, a salt and water are produced. • A salt is an ionic compound formed from the positive ion of a base and the negative ion from an acid. • Salts have many uses including:seasoning foods, preserving foods, making wallboard, baking soda, lye and many more.

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