LAB A

Question 1

Go over any calculations from Lab A in Workbook

Question 2

Define equivalence point

Answer 2

mole ratio of reaction is equal to the mols required by stoichiometry

Question 3

how many decimal places should you record when reading a buret?

Answer 3

2 decimal places

Question 4

what is the learning objective of Lab A

Answer 4

to gain exposure to the technique of titrating

Question 5

what is the scientific purpose of Lab A

Answer 5

to determine the amount of acid in vinegar by titration

Question 6

what is the indicator used for most titrations

Answer 6

thymolphthalein as the indicator (blue)

Question 7

density formula
Volume formula
Mass formula

Answer 7

d= mass/ volume
V= m/d
m= dxv

Question 8

formula for %v/v

Answer 8

100x volume of solute/ volume of solution

Question 9

percent error formula

Answer 9

100x exp-act/act

Question 10

do you have to be exact about the amount of water you use to dilute the vinegar?

Answer 10

no cause it doesn’t react with acid or vinegar

Question 11

Precision of your data can depend on

Answer 11

% difference, standard deviation, relative standard deviation