Standardization of naoh with a khp solution: Web solid naoh is highly hygroscopic (it absorbs water from the air) and thus it cannot be accurately weighed. Web burette solution naoh solution 2. This procedure is called standardizing the naoh solution. Web for the naoh solution you made last lab, only the approximate concentration is known. However, due to the presence of the second acidic group that bears the potassium ion, the first pka also. Use the average sodium hydroxide concentration, the end point volume for. The reaction between naoh and khp (molar mass 204.23 g/mole) is as follows: Molar mass khp = 204.22. Web an aqueous solution of sodium hydroxide (naoh) was standardized by titrating it against a 0.1421 g sample of potassium hydrogen phthalate (khp).
Use the average sodium hydroxide concentration, the end point volume for. However, due to the presence of the second acidic group that bears the potassium ion, the first pka also. Web to standardize a sodium hydroxide (naoh) solution against a primary standard acid [potassium hydrogen phthalate (khp)] using phenolphthalein as an indicator. Web calculate the purity of the impure sample of khp. Khc8h4o4 + naoh = nakc8h4o4 + h2o. Web solid naoh is highly hygroscopic (it absorbs water from the air) and thus it cannot be accurately weighed. Web a standard solution has an accurately known concentration and for this experiment sodium hydroxide was standardized with a primary standard acid,. Web 1 mol khp will neutralise 1 mol naoh you want to standardise a 0.1m solution of naoh. Web the naoh solution is standardized using the titration of a primary standard of khp (figure 2). A khp sample of known mass (and, therefore, known moles) can be titrated with the naoh solution to determine very precisely the concentration of the naoh. Web khp has one acidic hydrogen atom and reacts with naoh on a 1:1 stoichiometric basis:
