Volume data from the titration of unknown monoprotic acid using standardized. This chemistry video tutorial explains how to solve acid base titration problems. The real reason that titrations are so exciting is that they are a great way to see every kind of acid base calculation play out over the course of a single titration. This video, with the help of flash animations, shows and explains how you can determine the concentration of a sodium hydroxide solution using a standard sol. Acidbase titrations are based on the neutralization reaction between the analyte and an acidic or basic titrant. A titration is a controlled chemical reaction between two different solutions.
Sp12 1011 titration of hydrochloric acid with sodium hydroxide. If the mole ratio in the balanced chemical equation is 1. The reactant from burette is added drop by drop while the beaker is swirled to enhance the reaction. Heres a quick run through of the stoichiometry of it all.
The titration of a weak acid with a strong base involves the direct transfer of protons from the weak acid to the hydoxide ion. The subsequent calculations follow exactly the same steps as described above in the. Lec7 ch11 acidbase titn bridgewater state university. Acid base titration problems, basic introduction, calculations. The concentration of a basic solution can be determined by titrating it with a volume of a standard. Note that as the oh is added, the postneutralization result. It provides a basic introduction into acid base titrations with the. Any introductory chemistry class will include titrations, and to do these, you have to do math. One necessary piece of information is the saponification number. This is the amount of base needed to hydrolyze a certain amount of fat to produce the free fatty acids that are an essential part of the final product. Titration of a weak acid with a strong base chemistry. Acid base titrations 1 strong acid strong base titrations abbreviations example. A known reactant is taken in a burette and the test in a beaker.
To learn to calculate molarity based on titrations. These most commonly use a ph meter, or a conductance meter to determine the endpoint. Consider the titration of a 2 moles of a weak acid with strong base. Determination of pharmaceutical bases with perchloric. Rww14 acidbase mixing and titrations 72517, 4 pm christopher hill ch 201, section 001, summer 2. For the short cut equation does the molar ratio between acid and base matter. Would you need to need to do the calculation differently if for every 2 mol of. Titration introduction video titrations khan academy. The reaction of the weak acid, acetic acid, with a strong base, naoh, can be seen below.
The goal of the titration is to get as close as possible to the equivalence point by careful addition of the base. The ph at the equivalence point in the titration of any strong base or acid with strong acid or base will be 7. The manufacture of soap requires a number of chemistry techniques. In an acid base titration, a known quantity of acid is used to estimate an unknown amount of a base or viceversa.
519 1400 733 674 982 1310 1037 1439 81 257 1156 45 437 106 842 65 934 721 1227 1488 1346 530 785 460 199 875 993 316 185 644 295 1219 1029 582 1176