Why sulfuric acid is used in sulphated ash / residue on
ignition test.




Answers were Sorted based on User's Feedback



Why sulfuric acid is used in sulphated ash / residue on ignition test...

Answer / ravi teja

To convert the inorganic metals into metal sulphates.

Is This Answer Correct ?    93 Yes 8 No

Why sulfuric acid is used in sulphated ash / residue on ignition test...

Answer / ravindra surdikar

sulphuric acid reacts with inorganic compounds and
converted in to there sulphats and oxides

Is This Answer Correct ?    58 Yes 7 No

Why sulfuric acid is used in sulphated ash / residue on ignition test...

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 ?    44 Yes 6 No




Why sulfuric acid is used in sulphated ash / residue on ignition test...

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 ?    26 Yes 3 No

Why sulfuric acid is used in sulphated ash / residue on ignition test...

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

Why sulfuric acid is used in sulphated ash / residue on ignition test...

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 ?    3 Yes 1 No

Why sulfuric acid is used in sulphated ash / residue on ignition test...

Answer / r.kadambavadani

To convert the inorganic metals into metal sulphates very easily.

Is This Answer Correct ?    2 Yes 1 No

Why sulfuric acid is used in sulphated ash / residue on ignition test...

Answer / vinod

sulphuric acid added in sample inorganic metal conver to sulphate and oxide

Is This Answer Correct ?    0 Yes 1 No

Why sulfuric acid is used in sulphated ash / residue on ignition test...

Answer / ramesh

sulphuric acid does not absorb moisture and stable the ash

Is This Answer Correct ?    1 Yes 2 No

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