Biosorbent SAC

Question 1

Key finding 1

Answer 1

biosorbent removed copper from water

Question 2

Key finding 2

Answer 2

more biosorbent removes more copper

Question 3

biosorbent definition

Answer 3

a natural material that binds to waste and pollutants such as copper and removes them from solutions such as water

Question 4

Control

Answer 4

0.0299

Question 5

5g

Answer 5

0.0289

Question 6

7.5g

Answer 6

0.0274

Question 7

Errors

Answer 7

endpoint detection
inaccuracy of volumetric glassware
failure to remove funnel
amount of indicator

Question 8

systematic effect

Answer 8

decrease validity and accuracy

Question 9

random effect

Answer 9

decrease repeatability and precision

Question 10

endpoint detection

Answer 10

when end point and equilvalence points are not the same PH resulting in the indicator’s colour being slow -> inaccurate volume reading -> inaccuratee calculations

2 sets of titration

Question 11

inaccuracy of volumetric glassware

Answer 11

imperfection during calibration -> inaccurate readings or temperature flucutations (thermal expansion) -> inaccurate volume and overall data

ensure careful calibration of all materials

Question 12

failure to remove funnel

Answer 12

results in potential driping -> changing volume -> results invalid

ensure funnel is removed

Question 13

amount of indicator

Answer 13

uneven amount of indicator resuulting in endpoint detection occuring too fast or too slow -> hard to detect

same indicator amounts in all titrations

Question 14

limitations

Answer 14

biosorbent type
waste water/ pollutant type

Question 15

application

Answer 15

purification of waste water to make food safe

Question 16

KF1 Explain

Answer 16

copper ions positively charged bond with negativelys charged biosorbent forming stable bonds and removing the copper

Question 17

KF2

Answer 17

more active binding sites for copper ions

Question 18

Endpoint

Answer 18

point in which the completion of titration is obsevered by colour change

Question 19

equilvalence point

Answer 19

point in which titration has led to neutralisation of solution

Question 20

Mention volumetric analysis when doing data

Answer 20

:)