E Exercise
23rd March 2021
one set up
below is used to prepare you
laboratory
TA
SATURDAY
LV
watter
+
C
Give the name of part labelled I, II, III and IV
(9 klrite down the 2 nomes of the methods of
gas Collection
Explorin thow the gas collect over the water
(W) Name two goons that can be prepared during
the set up​

Which position represents spring in the southern hemisphere? a) b) c) d)

Salicylic acid is a very important acid. it is used to synthesize the aspirin by treating with acetic anhydride. a 0.2015-g sample of salicylic acid was dissolved in a 100.00-ml volumetric flask, and the solution was diluted to the mark. a 10-ml aliquot of this solution was titrated with standard naoh (0.01130 + 0.2% n) to a phenolphthalein faint pink color end point at 19.81 ml. (a) (calculate the normality of the salicylic acid solution used in the titration. (b) assuming the salicylic acid is pure, what is the equivalent weight of the salicylic acid? practice problems for the final exam (continued) (c) (calculate the inherent error in the determination of the equivalent weight you calculated in part (b). use the following absolute errors in the equipment /glassware when calculating the inherent error. 5.00-ml pipet: + 0.02 ml 100-ml volumetric flask: + 0.08 ml analytical balance: + 0.2 mg 25-ml buret: + 0.03 ml

What element has similar physical and chemical properties as boron.