Standardizing NaOH Using Primary Standard KHP Lab 28 Potassium acid phthalate KHP is used as a primary standard because it is readily purified and easily dried to high precision. Sodium hydroxide solutions are not prepared as primary standards because it readily reacts with CO 2 in the air to form carbonates. For this reason it is especially important to limit the air exposure of your base.

PART II: Standardization of an Unknown NaOH Solution. 1. Calculate the number of moles of KHP in 25.00mL of standard solution. 1 mark 2. Calculate the number of moles of NaOH required to neutralize this amount of KHP. note, KHP is a monoprotic acid; show all equations to explain 2 marks 3. Calculate & use your average volume of NaOH.

By: Juno Kim Introduction In this experiment the concentration of potassium hydrogen phthalate KHP in an unknown sample was determined through volumetric analysis. The volumetric analysis allows for the calculation of the unknown amount or concentration by a reaction with a known amount of reagent. For this lab, the unknown potassium hydrogen.

Hello, of course it is necessary to standardize your NaOH solution. Your KHP is potassium hydrogen phthalate, so I suppose you are trying to standardize sodium hydroxide against a primary standard.

atmosphere. The reaction between NaOH and KHP molar mass 204.23 g/mole is as follows: NaOH HOOC-C6H4-COOK Æ NaOOC-C6H4-COOK H2O By measuring the volume of the ~0.2M NaOH solution dispensed from the buret that is necessary to react completely with a weighed sample of KHP, the exact concentration of NaOH solution is calculated.

View Lab Report - Lab 4 Standardize NaOH 1 from CHM 273 at Seneca College. Standardization of NaOH Solution using KHP as a Primary Acid Standard Aa2.

In order to determine this we need to know the number of moles of NaOH that reacted with the KHP and the volume in liters of the NaOH solution that contained that said number of moles of NaOH. You know the mass in grams of the KHP used in the titration: mol KHP = Mass in grams of KHP Molar mass of the KHP 204.24 g/mol.

View Lab Report - NaOH post lab.pdf from SL 181 at Husson University. How many grams of KHP can be reacted with 17.6 g NaOH? 17.6 g of KHP since the reaction is one to one. If you continue to.

19.01.2013 · For a chemistry lab, I have to determine how much acetic acid is in various types of vinegar. The label says about 5% but i want to find out exactly how much through titration. The lab itself is fairly easy, the only difficult part is standardizing 0.1 M NaOH. I have no idea how to do this. I've been doing a lot of research and every.

Titration Lab of Naoh and Khp. Filed Under: Essays. 2 pages, 856 words. When KHP is added to the solution of NaOH and the indicator, the solution will turn clear and neutralize. The concentration of NaOH is going to be very low because it is diluted. Materials required: pipette filler, volumetric flasks2-4, beakers2,small white piece of paper, indicator 2 drops, conical flask, clamp.