Study of Acids, Bases and Salts
ICSE · Class 10 · Chemistry
All formulas from Study of Acids, Bases and Salts in ICSE Class 10 Chemistry. Key equations, constants, and identities for board exam preparation.
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Acids: Definition, Types and Basicity
HCl + H2O → H3O+ + Cl−
CH3COOH + H2O ⇌ CH3COO− + H3O+
Basicity of an acid = number of H3O+ or H+ furnished by one molecule
Bases and Alkalis
KOH(aq.) → K+ + OH−
NH4OH ⇌ NH4+ + OH−
Acidity of a base = number of OH− ions furnished by one molecule
pH, Water and Indicators
pH = -log10 [H3O+ concentration]
2H2O ⇌ H3O+ + OH−
Kw = [H3O+][OH−] = 1 × 10^-14 mol^2/litre^2 (each ion is 1 × 10^-7 mol/litre)
Salts: Definition and Types
Salt = partial or complete replacement of replaceable H atoms of an acid by metallic ion or ammonium ion
Acid salt forms when basicity of acid > acidity of base
Basic salt forms when acidity of base > basicity of acid
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