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Essay's paper info
| Topic: |
Science
|
| Number of pages / Number of words: |
7 / 1888 |
Essay's paper body
Hence, the mass of ascorbic acid reacted can be calculated.
Results
Mass of NaIO3 : 0.63 g
? Molarity of 250cm3 standard NaIO3 solution : (0.63 ?197.89 ? 0.25)M = 0.012734 M
By equation III, no. of moles of I2 formed = no. of moles of NaIO3 x 3 ?10
= (0.63 ?197.89 x 0.3)mol
= 9.550761x10-4 mol
By equation II, no...
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of moles of I2 formed = no. of moles of NaIO3 x 3 ?10
= (0.63 ?197.89 x 0.3)mol
= 9.550761x10-4 mol
By equation II, no. of moles of S2O32- needed to react all I2 = no. of moles of I2 formed x 2
= (9.550761x10-4 x 2)mol
= 1.910152x10-3 mol
The table below shows the standardization of Na2S2O3 solution by titration:-
Trial 1st 2nd
Final reading /cm3 32...
Essay fragment
General points of the essay
Analysis of commercial vitamin C tablets
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