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Chemistry 266 Dominick Armstrong 10/10/2012 Acid-Base Titration Intro Acid and bases are two significant classes of compounds that react to contact form a sodium and normal water. When mixing acids and bases a precise amount of the base it should be added in order to reach the equivalence point. Now, one reactant has been precisely consumed by the addition of some other reactant.

When conducting chemical reactions chemist use a method called titration to determine the equivalence point in the reaction.

Once the equivalence point is known then chemist can correctly determine the amount the concentration of the acid and the base. In this experiment acid-base titration will be used to determine the concentration of HCl at equilibrium when it reacts with the NaOH H+ (aq)+ Cl- (aq) + Na+ (aq) + OH- >H2O(l) & Na+ (aq)+ Cl- (aq) Procedure When performing this research one need to first get hold of and have on goggles. Subsequent add 40mL of unadulterated water into a 100mL beaker, then put 5. 00mL of HCl to the beaker. Then get hold of 40mL of 0. 1M NaOH.

You can put NaOH in a 60mL reagent reservoir and drain a small amount into a 250mL beaker to fill the tip. Connect the Ph messfühler to the LabQuest and set up the drop counter-top. Then calibrate the titrant by altering the water tank tip to and enabling the NaOH slowly drain into a graduated cylinder till 9 or 1o cubic centimeters has been recorded. After the LabQuest has been calibrated discard the perfect solution is. The put together the titration apparatus while shown inside the picture listed below. Place the HCl solution on to the magnet stirrer and slowly titrate the NaOH into the answer.

Start your data collection to calculate the quantity of NaOH is added when the option reaches it is equivalence point. Then down the calculations and take apart the device. Discussion My personal lab group and I completed this test doing two trials. We found that both tests were came to the conclusion with same exact results. In trial 1 all of us found the volume of NaOH added to the answer was 5. 01ml before the largest pH increase, and 4. 05mL after. We calculated the quantity at the equivalence point to become 4. 03mL. We found there were some. 3, 10-4 moles of NaOH and 4. 03, 10-4 skin moles of HCl. Then we calculated the concentration of the HCl to get. 08 moles per liter. In trial 2 all of us found 4. 951mL of NaOH was added prior to the increase and 4. 992mL after. The volume at the assent point was 4. 971mL. There were some. 971, 10-4 moles of HCl and 4. 971, 10-4 skin moles of NaOH. The attentiveness of HCl was discovered to be. 094 moles per liter. All of us found the regular concentration to be. 08971M. Although the results of both trial in the try things out were identical the outcome was not the identical.

The mistake might have come from an error in measuring the HCl and distilled water. More HCl may have been added because all of us did not offer an accurate pipet bulb. All of us used a graduated canister to add the HCl, and may even have had a more or much less HCl than what was needed in the research. Conclusion The results with this experiment present that titration is an effective approach to find the concentration of reactants in an acid solution base reaction. Using the titration helped my own group accurately calculate the quantity of NaOH that was added to the solution, and helped us to correctly identify the correct concentrations.