Why is it necessary to wet the litmus paper to test the presence of evolving SO3
gas in decomposition of vitriol salts?
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Answers
Answered by
2
Explanation:
because in presence of water only it gives out oH- or h+ ion
if water is not present it will not give out oh- or h + ion, so the color of litmus paper will not be changed
Answered by
1
Answer:
Because the presence of carbolic acid can change the appearance of it.
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