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      <title>3.1.12. Acids and Bases by Mrs J Leach</title>
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      <description>Acids are proton donors and bases are proton acceptors, and their reactions can be understood using Brønsted–Lowry theory. This section covers neutralisation, strong vs weak acids and bases, pH calculations, and how acid–base equilibria are explained using Ka and pKa values.</description>
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      <pubDate>2025-09-14 15:39:27 UTC</pubDate>
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         <title>L1 notes sheet</title>
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         <title>L1 Starter</title>
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         <title>Video summary</title>
         <author>jenleach</author>
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         <title>L2 PowerPoint</title>
         <author>jenleach</author>
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         <pubDate>2025-09-14 15:43:22 UTC</pubDate>
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         <title>L2 notes sheet</title>
         <author>jenleach</author>
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         <title>L2 answers</title>
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         <title>Video recap</title>
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         <pubDate>2025-09-14 15:44:47 UTC</pubDate>
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         <title>L3 PowerPoint</title>
         <author>jenleach</author>
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         <pubDate>2025-10-01 20:15:07 UTC</pubDate>
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         <title>L3 Note sheet</title>
         <author>jenleach</author>
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         <pubDate>2025-10-01 20:15:23 UTC</pubDate>
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         <title>L3 Answers</title>
         <author>jenleach</author>
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         <title>Video recap</title>
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         <pubDate>2025-10-01 20:16:32 UTC</pubDate>
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         <pubDate>2025-10-01 20:17:12 UTC</pubDate>
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         <title>L4 Notes</title>
         <author>jenleach</author>
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         <pubDate>2025-10-01 20:17:28 UTC</pubDate>
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         <title>L4 Exam question</title>
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         <pubDate>2025-10-01 20:17:42 UTC</pubDate>
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         <title>L4 Answers</title>
         <author>jenleach</author>
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         <pubDate>2025-10-01 20:18:26 UTC</pubDate>
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         <title>Video recap</title>
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         <pubDate>2025-10-01 20:19:45 UTC</pubDate>
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         <title>L5 PowerPoint</title>
         <author>jenleach</author>
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         <pubDate>2025-10-09 20:18:25 UTC</pubDate>
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         <title>L5 Notes</title>
         <author>jenleach</author>
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         <pubDate>2025-10-09 20:20:27 UTC</pubDate>
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         <title>Worked examples</title>
         <author>jenleach</author>
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         <pubDate>2025-10-09 20:20:41 UTC</pubDate>
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         <title>L5 Answers to note book questions.</title>
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         <pubDate>2025-10-09 20:22:26 UTC</pubDate>
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         <title>Video recap (first 10 mins only)</title>
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         <pubDate>2025-10-09 20:25:43 UTC</pubDate>
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