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8.1.1 THE CHARACTERISTIC PROPERTIES OF ACIDS & BASES cont... EXTENDED ONLY Proton Transfer & Weak & Strong Acids & Bases • Weak acids and bases • Weak acids and bases partially ionize in water and produce pH values which are closer to the middle of the pH scale • Weak acids include organic acids such as ethanoic acid, CH 3COOH and weak
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Preview and Download !9. Name one natural source of each of the following acids. (a) Citric acid (b) Oxalic acid (c) Lactic acid (d) Tartaric acid 1 10. A farmer has found that pH of soil in his fields is 4.2. Name any two chemical material that he can mix with the soil to adjust the pH. 1 11.
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Preview and Download !Acids, Bases, and Solutions ANSWER KEY Acids, Bases, and Solutions Describing Acids and Bases Review and Reinforce 1. Sour 2. Bitter 3. Corrosive to magnesium, zinc, and iron; eats them away and produces bubbles of hydrogen gas 4. Doesn’t react with metals 5. Produces carbon dioxide 6. Doesn’t react with carbonates 7. Red 8. Blue 9.
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Preview and Download !Acids • Sour taste • High concentration of H+ ions • Conduct electricity •good conductor strong acid •weak conductor weak acid •React with bases to form water and a salt •pH of 1-6, the lower the pH the stronger the acid Example lemon juice
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Preview and Download !BASES are compounds with a chemical formula ending in “OH”. Basic compounds are also referred to as “alkaline”. Ex) Sodium hydroxide: NaOH pH value is a degree of acidity associated with a substance. This ranges from 1-14, with 1-3 identifying the strongest and most dangerous acids, 4-6 as weaker acids, 7 being neutral and relatively ...
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Preview and Download !Strong acids Weak acids ligible acidity ACID HCI HN03 H30+(aq) H3P04 CH3COOH H2S H2P04 HC03- HPC) 2_ H20 CH4 BASE HSOC N03- CH3COO- HC03- co-F- Negligible basicity Weak bases Strong bases FIGURE 16.3 Relative strengths of select conjugate acid—base pairs. The two bers ot each pair are listed opposite each other in the two columns.
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Preview and Download !of Acids and Bases Question Paper 2 Level IGCSE Subject Chemistry (0620/0971) Exam Board Cambridge International Examinations (CIE) Topic Acids, bases and salts Sub-Topic The characteristic properties of acids and bases Booklet Question Paper 2 Time Allowed: 20 minutes Score: /17 Percentage: /100 Grade Boundaries:
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Preview and Download !Created Date: 5/1/2018 11:46:11 AM
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Preview and Download !Worksheets (6) Vocabulary - Acids and Bases pdf (11) Aspirin Article questions pdf (7) pH and pOH Calculations pdf ... Practice Problems - Answer Key pdf (13) Video: The Future of the Past pdf (9) Aqueous Acids and Bases Titration pdf (14) Ch 15 Modern Chemistry textbook questions pdf (10) Weak Acid, pKa pdf (15) Textbook Questions pdf
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Preview and Download !Dougherty Valley HS Chemistry Acids & Bases – Weak Acids/Bases Practice 4) Calculate (a) the pH and (b) the percent ionization of a 0.250 M HC 2 H 3 O 2 solution. Ka (HC2H3O2) = 1.8 x 10-5. (The formula for acetic acid may also be written as CH 3 COOH.)
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