Add about 70 mL of freshly boiled, carbon dioxide free distilled water, dissolve. Add 3-4 drops of phenolphthaleine solution. Titrate with NaOH solution till the first color change. To calculate sodium hydroxide solution concentration use EBAS - stoichiometry calculator. Download sodium hydroxide standardization against solid KHP reaction file ...
When dissolved in water, the strong base sodium hydroxide ionizes into hydroxide and sodium ions: NaOH → Na + + OH − and similarly, in water hydrogen chloride forms hydronium and chloride ions: HCl + H 2 O → H 3 O + + Cl − When the two solutions are mixed, the H 3 O + and OH − ions combine to form water molecules: H 3 O + + OH − → 2 H 2 O
So to get back the acid and base, we can exchange the ions of salt with water. So let's do that. So water, or H2O, can be written as HOH. Now let's write down the ions of both of these. So the ions of our salt will be CH3COO-, or acetate ion and the sodium plus sign, Na+ and the ions from water, I can write it as H⁺ ion and hydroxide ion, OH ...
5 N Sodium hydroxide: Dissolve 200 g NaOH in distilled water, cool, and dilute to 1 L. 0.1 mg F /mL stock solution: Dissolve 0.2210 g NaF in distilled water and dilute to 1 L in volumetric flask. Transfer to polyethylene bottle for storage.
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