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Why sulfuric acid is used in sulphated ash / residue on
ignition test.
- 9 Answers
- 78571 Views
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Answer / ravi teja
To convert the inorganic metals into metal sulphates.
| Is This Answer Correct ? | 110 Yes | 11 No |
Answer / ravindra surdikar
sulphuric acid reacts with inorganic compounds and
converted in to there sulphats and oxides
| Is This Answer Correct ? | 70 Yes | 8 No |
Answer / dilip m patil
1)The gravimetric technique is used to perform the residue
ignition test or sulphated ash test. The residue obtained
after sulfuric acid treatemnt is chemically and thermally
stable and it fulfiles principles of gravimetric analysis
techique.
2)The residue obtained without use of sulphuric acid are
sensitive to carbon dioxide and moisture present in lab.
atomosphere. Hence the residues composition changes and
ultimately mass of residues changes during final weighing
of residue and the accuracy and precision of test will be
questionable.
| Is This Answer Correct ? | 51 Yes | 6 No |
Answer / mrutyunjay tripathy
Sulphuric acid is a strong oxidising agent which oxidises
the carbon present in the organic samples resulting CO2 &
H2O and converts the metals into their sulphates which can
be easily extracted to perform the heavy metal test.
| Is This Answer Correct ? | 28 Yes | 3 No |
Answer / mrutyunjay tripathy
To convert the metals present in the sample into their
metalic sulphates which can be easily extracted to perform
the heavy metal test . Infact sulphuric acid is a strong
oxidising agent .
| Is This Answer Correct ? | 9 Yes | 2 No |
Answer / aamir sohail
it converts most of the metals into their sulphates but not all like phosphorus does not converted into sulphates it remain same till the end of the test, than these metal sulphates further proceed for heavy metal test that how much amount of which metal present in it...
| Is This Answer Correct ? | 4 Yes | 1 No |
Answer / r.kadambavadani
To convert the inorganic metals into metal sulphates very easily.
| Is This Answer Correct ? | 4 Yes | 1 No |
Answer / ramesh
sulphuric acid does not absorb moisture and stable the ash
| Is This Answer Correct ? | 2 Yes | 2 No |
Answer / vinod
sulphuric acid added in sample inorganic metal conver to sulphate and oxide
| Is This Answer Correct ? | 0 Yes | 1 No |
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Organic Chemistry 
