ICSE Class 10 Chemistry 2023 Solved Paper
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Differentiate between the following pairs based on the criteria given in the brackets:
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Question : 82
Total: 88
Sulphuric acid and hydrochloric acid [type of salts formed]
Solution:
Sulphuric acid formed two types of salt (i) Normal salt and (ii) Acidic salt whereas hydrochloric acid formed only normal salts. Normal salts are formed by the complete replacement of the ionisable hydrogen atoms of an acid but acid salts are formed by the partial replacement of the ionisable hydrogen atoms of a polybasic acid.
e.g. Normal salts :
HCl + NaOH → NaCl + H 2 O
H 2 SO 4 + 2 NaOH → Na 2 SO 4 + 2 H 2 O
Acidic salt :
H 2 SO 4 + NaOH → NaHSO 4 + H 2 O
H 2 SO 4 + NaCl
NaHSO 4 + HCl .
e.g. Normal salts :
Acidic salt :
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