Which of the following is a volatile acid and which is non-volatile?
Sulfuric acid, Sulfurous acid

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Solution

Volatile and non-volatile acids:
Volatile acids vaporize very quickly.
Non-volatile acids do not vaporize quickly.
Sulfuric acid:
Sulfuric acid $(H_{2} {SO}_{4})$ has a high boiling point i.e., 337 °C. Hence, it is a non-volatile acid.
Sulfurous acid:
Sulfurous acid $(H_{2} {SO}_{3})$ has a low high boiling point i.e., -60 °C . Hence, it is a volatile acid.

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(a) Which property of sulphuric acid accounts for its use as a dehydrating agent ?

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(iv) Dilute sulphuric acid behaves as dibasic acid.

(a) Name the process used for the large scale manufacture of sulphuric acid.
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Which of the following is a volatile acid and which is non-volatile?Sulfuric acid, Sulfurous acid

Which of the following is a volatile acid and which is non-volatile?
Sulfuric acid, Sulfurous acid