Sodium hydroxide

By titrating an unknown concentration of acid or base with a known concentration of acid or base, you can calculate properties such as the concentration and pKa of the analyte. During the standardization part of this reaction, we are adding Sodium Hydroxide, NaOH to a solution…

glycerol and fatty acids. The saponification value or saponification number is the amount of alkali needed to saponify the given quantity of fat or oil, expressed as mg potassium hydroxide to saponify 1 g of the sample. In this experiment, the researchers used chemicals such as ethanol, hydrochloric acid (HCl), potassium hydroxide (KOH) and phenolphthalein indicator. Laboratory Apparatuses and Equipment such as 650 mm long Air (reflux) condenser, 250 ml beakers, Buchner funnel, boiling beads,…

this information is provided, the known concentration of NaOH(aq) is 0.25M. It is necessary to rinse out the burette with sodium hydroxide solution before starting titration, as the concentration of the base can be affected by the water used to clean the burette. At the same time, when cleaning the burette it may not have been washed thoroughly . By rinsing with sodium hydroxide solution, it ensures that the burette is clean and will not affect the results of the experiment. Running a…

hydrochloric acid and heat the flame until it glows. Pour about 10 milliliters of 10% sodium chloride solutions into a small beaker and for unknown use 2mL of unknown solution instead of sodium chloride. Dip the clean wire loop into sodium chloride solution and place the loop in the flame and record the observation. Third, potassium flame will be tested. First, clean the wire lop with concentrated HCI for sodium flame test. Pour two milliliters of 10% potassium chloride solution into a small…

specifically hydrochloric acid. The acid reacted with basic elements of the mixture and allowed for the simple extraction of the unknown basic compound. The same idea was then again applied when extracting the acid, a bas was used more specifically sodium hydroxide. The acid reacted with this base and separated off allowing us to drain in…

The easiest liquid to identify was Ammonium hydroxide (5), due to its characteristic pungent smell. The solid 7, copper sulphate was also easy to identify due to its blue crystals. Once these was eliminated, the two black powders suspected to be CuO and MnO2 were reacted with the other three liquids…

The way that they identified was to measure the pH first. There was only a one strong base which was #66, so it was 1 M sodium hydroxide. And then there were two very strong acids, one of them didn’t show any visible reaction which is #65, so it was 1 M nitric acid, which means #60 was 1 M hydrochloric acid. #61 was a strong acid that didn’t react with any of the other solutions…

Introduction In this experiment, the goal was to isolate an organic substance. Using extraction, a basic, acidic, and neutral substance was expected to be extracted from the original unknown compound. Extraction is a process that allows the separation of substances that were previously mixed together through the use of a solvent1. This can be useful in situations where the substance has both the desired product and undesired byproducts in it. In order for extraction to work, the solvent must…

equivalence point as the strong base and strong acid are both completely dissociated so the salt does not form any hydronium or hydroxide ion in water. Yet, the weak acid HCCOH formed the salt, HCOONa, when reacting with NaOH results in a basic pH level at 8.7 for its equivalence point. This is because when HCOONa reacts with water, it forms formic acid and the hydroxide ion. Hence, the solution would be more basic than HCl, which is why by having the same shape for the titration curve, the…

phenolphthalein reacting with sodium hydroxide consists of C20H14O4+ NaOH → NaKC8H4O4 (aq)+ H2O(l) Phenolphthalein is used as an indicator in this reaction because it changes color when a solution reaches a pH of around eight, or in other words the endpoint of a solution. It also allows us to see a physical change, thus resulting in a more accurate measure of how much was titrated. Citric acid is a weak acid, making it best titrated by using a strong base, such as sodium hydroxide. The…