ICSE Class 10 Chemistry
Question 2 of 62
Study of Compounds — Sulphuric Acid — Question 7
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Question Question 7
Give reasons why dilute sulphuric acid:
(i) behaves as an acid when dilute.
(ii) is dibasic in nature.
(i) Acidic properties of sulphuric acid are due to the presence of hydronium ions [H3O+] formed when H2SO4 dissociates in aqueous solution. Hence, it behaves as an acid when dilute.
(ii) Sulphuric acid dissociates in aqueous solution giving two hydrogen ions (H+) ions per molecule of the acid. Hence, it is dibasic in nature.
H2SO4 ⇌ 2H+ + SO42-
H2SO4 + 2H2O ⇌ 2H3O+ + SO42-