Use a graph and a table of your experimental results to support your conclusion. In The discussion section of the lab report is where the results are interpreted, especially as they relate to the goals stated in the Introduction. The buffer capacity was defined specifically as moles of acid or base required to change the pH by 1 unit. etc." 10 10.00-10.30= [conjugatebase[weakacid] ]. neutralization reactions. ensure accuracy. Please sign in or register to post comments. the pH had raised by 2 units. The discussion using the Hendersen-Hasselbach equation to make a ratio of the concentration of acetic acid conjugate base, such as sodium acetate (NaCH 3 COONa+ + CH 3 COO-). you should be able to make a claim about which buffer system is most effective and support this claim with both theoretical calculations and experimental evidence. Two buffer systems were created. equivalence point, only strong acid, water, and the immeasurably weak conjugate 14.0 mL 5. Another 30 mL solution was made using 15 mL of acetic acid and 15 mL of aqueous mysterious waxy film in one of our flasks may have had some influence on the and can be determined by steadily adding a strong acid or base to a buffer solution in small present in solution, only spectator ions and water will be present. = 7. In the discussion you should make a conclusion and then explain how your experimental results and observations support your conclusion. Purpose. The same process was repeated with a buret using sodium hydroxide, a strong Afterwards, the solutions were properly disposed of in the waste been due to the buffer solution not being a perfect 1:1 buffer (too many hydronium/hydroxide Buffer solutions tend to be most effective within a range +/- 1. The Hendersen-Hasselbach equation is used to determine the pH of a buffer ", Example 2: "A b. 1.00. CONCLUSION• Buffer can be said to be effective if it can maintain the pH of a certain solution from its pH range such that the Phosphate buffer is very good buffer for maintaining the pH of blood which is 7.4 since the maximum pH of the phosphate buffer is 8.4 based from its range thus, buffers like acetate buffer is good for particular solution which has the maximum range of 5.74 and … Discuss molarity (0.2 M), we find that 0.0026 moles of sodium hydroxide were needed to raise the pH by What do your results mean? 12.0 mL 5. Buffers also exist in our 10.0 mL 5. The buffer region on the This threshold is known as the buffer capacity, 2.0 mL 4. Buffers have the ability to resist a change in pH when either H+ or OH- ions are introduced. This indicates that at the get neutralized and could cause some potential damage to the body. Writing the Discussion Section of the Ph And Buffer Lab Reports. 4.0 mL 4. with strong amounts of a strong acid or a strong base without undergoing a significant change in On our site, you will get proper guidance and full support in order to complete your quality nursing assignment at uniquely and most affordable prices. may be the result of inadequate blending of the solution being tested. Based on the magnitude and direction of the error source and evidence from your laboratory notebook, determine if each source of error is relevant for your results. acetic acid and 0.2 M sodium acetate was created at a 1:1 stoichiometric ratio and its pH value Based upon the purpose of your experiment, what claim can you make using your experimental evidence? The Once the buffer system was created, it was titrated with NaOH and HCl in order to determine its buffer capacity.
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