7.Carboxylic acids/Carbonic acids

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Last updated 4:13 PM on 4/12/26

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28 Terms

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Carbonic acids

=O and –OH group influences each other:

• =O it does not show the properties typical of aldehydes

• -OH it dissociates much more

<p>=O and –OH group influences each other:</p><p class="is-empty is-editor-empty has-focus">• =O it does not show the properties typical of aldehydes</p><p class="is-empty is-editor-empty has-focus">• -OH it dissociates much more</p>

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Carbonic acids: Numbering

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Reactions of carbonic acids

Salt formation: NaOH, Na2CO3, Na

Ester formation

Decarboxylation: under the influence of heat

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Strongest acid

Formic acid

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Acid Strength

+ alkil-group – (e-sending prop.) → acid strength decreases

+ e- attractive group (Cl, Br) → acid strength increases

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Dicarboxylic acids

one is a strong acid, the other a weak acid

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Aromatic acids

Stronger

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Lactic acid

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<p>Lactic acid identification: Legal reaction_Step 1</p>

Lactic acid identification: Legal reaction_Step 1

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<p>Lactic acid identification: Legal reaction_Step 2</p>

Lactic acid identification: Legal reaction_Step 2

acetaldehyde

<p>acetaldehyde</p>

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<p>Lactic acid identification: Legal reaction_Step 3</p>

Lactic acid identification: Legal reaction_Step 3

Sodium nitroprusside: [Fe(CN)5 NO]2-

<p>Sodium nitroprusside: [Fe(CN)5 NO]2-</p>

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Lactil lactate

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Dilactone

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<p>Lactic Acid Assay Step 1</p>

Lactic Acid Assay Step 1

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<p>Lactic Acid Assay Step 2</p>

Lactic Acid Assay Step 2

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<p>Lactic Acid Assay Step 3</p>

Lactic Acid Assay Step 3

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Lactic Acid Assay Calculation

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Tartaric acid

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<p>Tartaric acid Identification: Fenton reaction Step 1</p>

Tartaric acid Identification: Fenton reaction Step 1

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<p>Tartaric acid Identification: Fenton reaction Step 2</p>

Tartaric acid Identification: Fenton reaction Step 2

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<p>Tartaric acid Identification: Fenton reaction Step 3</p>

Tartaric acid Identification: Fenton reaction Step 3

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<p>Tartaric acid Identification: Fenton reaction Step 4</p>

Tartaric acid Identification: Fenton reaction Step 4

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Sorbic acid

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Citric acid

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<p>Citric acid Identification: dissolve in acetic anhydride + pyridine mixture</p>

Citric acid Identification: dissolve in acetic anhydride + pyridine mixture

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Citric acid Identification: compound + water + NaOH solution + calcium-chloride-solution → boiling → white ppt

White ppt.

<p>White ppt.</p>

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<p>DENIGES-REACTION: Citric acid Step 1</p>

DENIGES-REACTION: Citric acid Step 1

compound + water + mercury (II) sulphate solution → boiling → + 3 drops potassium permanganate → white ppt

<p>compound + water + mercury (II) sulphate solution → boiling → + 3 drops potassium permanganate → white ppt</p>

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<p>DENIGES-REACTION: Citric acid Step 2</p>

DENIGES-REACTION: Citric acid Step 2

White ppt

<p>White ppt</p>