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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 ionsfrom the acid react with hydroxide ionsfrom 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 thingsdepend on having a steady pHin their environment. -Rainis usually slightlyacidic. Acid rain can be as low as 3 on the pH scale.

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

  7. LET’S TRY ITTOMORROW! LAB: TESTING ANTACIDS

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