Design III
Materials:
Goggles
HCl
NaOH
Distilled Water
Label
Beaker
Graduated Cylinder
Pipet
Stirring rod
Buret with clamp
Stopper
Ring Stand
Utility Clamp
Computer
Computer Program pH probe
Procedure:
1)
2) Goggles were put on.
3) 0.1 M NaOH solution was made using 0.4 g NaOH and 100 mL distilled water. The ingredients were added together in a beaker and stirred.
4) The buret was standardized by adding 10 mL of distilled water, rolling the buret, and then pouring it out two times. 5 mL of distilled water was then added to buret, rolled, and then poured out. Then, 5 more mL of distilled water were poured in the buret and released through the bottom. This process was then …show more content…
The completion of a reaction can be seen by a change in color or when the pH remains constant. The equivalence point during titration is when both solutions are present in equal amounts. The end point of the titration is when the reaction has been completed, which is usually marked by a change in color. One researchable question relating to acid/base titration would be what strengths of acids and bases react with each other during titrations, and what kind of solution would the two then form. Strong acids and strong bases can react, and they form a neutral solution. Strong acids and weak bases can react, and they form an acidic solution. Strong bases can also react with weak acids to form a basic solution.
Errors
Improvements
Adding NaOH too quickly.
Add the NaOH one drop at a time until the proper level has been reached.
The data was not properly recorded.
Keep track of each pH increase for each experiment as opposed to just initial and spikes.
Buret may have been contaminated since multiple classes used the same buret without cleaning