Question

anyone in here okay at chemistry??

Answer 1

1. When performing this experiment, a student mistakenly used impure KHP to standardize the NaOH solution. If the impurity is neither acidic nor basic, will the percent by mass of the acetic acid in the vinegar solution determined by the student be too high or too low? Justify your answer with an explanation.

2. When preparing a NaOH solution, a student did not allow the NaOH pellets to completely dissolve before stnadardizing the solution with KHP. However, by the time the student refilled the buret with NaOH to titrate the acetic acid, the remaining NaOH pellets had completely dissolved. Will the molarity of acetic acid in the vinegar solution, determined by the student, be too high or too low? Justify with explanation.

3. Distilled water normally contains dissolved CO2. When preparing NaOH standard solutions, it is important to use CO2 free distilled water. How does dissolved CO2 in distilled water affect the accuracy of the determination of a NaOH solution's concetration? (hint: research the term anhydride)

Answer 2

why dont you just go into the chem section and ask there?

Answer 3

becasue no one is answering :(

Answer 4

lol. sorry. havent taken chem in 4 yrs:( wish i could help

Answer 5

pretty short.

Answer 6

hm?

Answer 7

Maz123, you need to post this in the chem section. I understand the frustration, but posting this in the wrong group will not get you help. Thank you!