Titration of a buffer solution with a strong base with Cobra SMARTsense Principle Buffer solutions usually consist of weak acids and their conjugate bases. Acids neutralise hydroxide-ions, bases on the other hand oxonium-ions. A buffer solution is produced by adding an equimolar mixture of a weak acid and its salt (e.g. acetic acid and sodium acetate) or a weak base and its salt (e.g. ammonium chloride and ammonia). In this experiment student examin a buffer solutions (here: acetate buffer) and how they work by adding a strong base (here: sodium hydroxide solution) to such. Benefits - Experiment literature available for pupils and teachers: Minimum preparation time
- Simple teaching and efficient learning by using the available interactive experiment literature
Cobra SMARTsense pH - Sensor for measuring the pH value 0 ... 14 (Bluetooth)
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12921-00
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1
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Support base, variable
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02001-00
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1
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Burette clamp, roller mount.,1pl.
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37720-01
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1
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Pipettor,bulb,3 valves,100ml max.
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47127-02
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1
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Pipette with rubber bulb
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64701-00
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1
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Laboratory pen, waterproof, black
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38711-00
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1
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Erlenmeyer flasks, Boro, wide neck, various sizes
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46151-00
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1
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Protecting glasses, clear glass
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39316-00
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1
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Beaker, 50 ml, plastic (PP)
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36080-00
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2
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Wash bottle, 250 ml, plastic
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33930-00
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1
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Funnel, diameter = 40 mm, plastic (PP)
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36888-00
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1
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Graduated pipette, 5 ml : 0,1
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36599-00
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1
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Burette with straight glass stopcock, 10 ml
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47152-03
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1
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Stand rods, stainless steel, various sizes
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02059-00
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1
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Sodium acetate trihydrate, 250 g
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30149-25
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1
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Hydrochloric acid 37 %, 1000 ml
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30214-70
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1
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Water, distilled 5 l
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31246-81
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1
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Acetic acid 99...100%, 500 ml
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31301-50
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1
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Buffer solution tablets pH10, 100
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30283-10
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1
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Buffer solution tablets pH4, 100
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30281-10
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1
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