Drger

Studying the pH of Strong Acid,Weak Acid, Salt and Buffer replys entree The target area of this experiment was to compare calculated and metric pHs of back breakeric effects. victimisation the pH the sultry dissociation constant quantity of acetic acerbic could be determined We preformed experiment in part III which was preparing HC2H3O2 solutions and determine pH. Procedure 5 ML OF 0.10M HC2H3O2 in a make clean change 5ml were stack away in a calibrated piston chamber. 4 outpouring pipeworks were laid on a interrogation tube pedestal and in the first tube 2.5 ml of HC2H3O2 was transferred. The remaing of the coultion was ttransfered to a clean beaker plot of ground the graduated cylinder was rinsed and the rinses were agreeed to the new beaker. The solution was involved soundly after being mixed with 25ml of distilled water. 2. 5ml of that solution was poured into the second shew tube. 2.5 ml of that wasm solution was poured onto a second graduated cylinder . add 20 ml of rinses from the first 50 ml beaker to the discared solutions beaker. Dilute the second solution with 25ml of distilled water and add 2.5 of this solution to test tube 3. Repeat this process for test tube 4. To measure the pH we transferred the solutios in the test tubes into severalize labeled beakers and insterted the pH Meter. Rinsing the electrode with distilled water each time. info and Calculations From our calculations it remain be seen that as the concentration of HC2H3O2 decreased, the pH of our solution increased. import it became more basic. Discussion Weak acids are acids that 10% or less of their molecules dissociate in water. In weak acids the [H3O+] is strangle than the concentration of the acid that was introduced. The Ka for HC2H3O2 is 1.8x10-5 which is kinda small so we shag do approximation for the pH even though accustom the quadratic equation would be better. Conclusion The weak acid which was the one we worke d with HC2H3O2 had different pHs even thou! gh their concentraions were the same. That just goes to bye that strong...If you want to get a full essay, order it on our website: OrderEssay.net

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