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Titration experiment. Standardization of hydrochloric acid using sodium carbonate.

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  • Essay length: 445 words
  • Submitted: 01/09/2010
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International Baccalaureate Chemistry

The first 200 words of this essay...

Name : AMirul SYafiq

Title : Standardization of hydrochloric acid using sodium carbonate.

Variables :

a) dependant : Volume of hydrochloric acid.

b) independant : The colour of the solution.

Results :

1) Preparation of the dilute HCl.

a) Rough molarities:11M

b) Volume in the measuring cylinder : 2.0 + 0.1cm³

c) Volume in the volumetric flask : 250 + 0.25cm³

2) Preparation of the Na2CO3 solution.

a) Mass of pure Na2CO3 : 1.329 + 0.0001g

b) Volume in the volumetric flask : 250 + 0.25 cm³

c) Volume of the pipette solution : 25 + 0.03cm³

Data collection :

1

2

3

Initial burette reading (cm³) + 0.05cm³

0.00

0.00

0.00

Final burette reading (cm³) + 0.05cm³

20.7

20.6

20.2

Volume of HCl used (cm³) + 0.05cm³

20.7

20.6

20.2

Observation : The colour indicator in the Na2CO3 solution changes from yellow to orange.

Data processing :

Gross volume of HCl used :

20.7 + 20.6 + 20.2 =

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