14. As a solution containing 158 g dm of Nas,
dm
B was obtained by dissolving 9.0 g of an imp...
Chemistry, 10.03.2021 14:00 dzepeda061
14. As a solution containing 158 g dm of Nas,
dm
B was obtained by dissolving 9.0 g of an impure sample of lain aqueous KI and the solution made up to
Put A into the burete. Pipette 25.0 cm of B. Use starch solution as indicator Repeat the titration to obtain
concordant titre values
Complete the table and calculate the average volume of Aused
Buretle readings/em!
1
2
Final reading
14.30
28.50
6.55
Initial reading
0.00
Volume of A used/em!
14.00
14.10
The equation for the reaction involved in the titration is:
T25.01.21 S. O.
From your results and information provided, calculate the:
a) Concentration of A in moldm?
b) Concentration of 12 in B in moldm':
c) Percentage by mass of I2 in the sample.
10-16.0. Na - 23.0, S - 32.0.1 - 127.01
110
Answers: 3
Chemistry, 21.06.2019 22:20
Which of the following statements is false regarding aromaticity? a. the compound must be cyclic b. the compound must be fully conjugated c. the compound must be planar d.the number of electrons in the pi system must satisfy the hückel 4n+2 rule e. the compound must have a neutral charge
Answers: 2
Chemistry, 21.06.2019 22:30
How many moles are in 250 grams of tungsten (w)? * 4.4x10^23 moles 4.2x10^23 moles 0.7 moles 1.4 moles
Answers: 3
Chemistry, 22.06.2019 05:30
What is the mass defect of a mole of nuclei with 1.8 x 10^15 j/mol binding energy?
Answers: 1
Chemistry, 22.06.2019 10:10
How do you identify the anode on a power source such as a battery? how do you identify the cathode? how are terms anion and cation?
Answers: 1
Mathematics, 25.11.2019 19:31
Mathematics, 25.11.2019 19:31
History, 25.11.2019 19:31
Mathematics, 25.11.2019 19:31
History, 25.11.2019 19:31
Computers and Technology, 25.11.2019 19:31
Physics, 25.11.2019 19:31
Biology, 25.11.2019 19:31
Social Studies, 25.11.2019 19:31
Mathematics, 25.11.2019 19:31