chapter 12

Acids and Bases:

• H2SO4: Sulphuric acid

• Ca(OH)2: Calcium hydroxide

• HCl: Hydrochloric acid

• NaOH: Sodium hydroxide

• KOH: Potassium hydroxide

• NH4OH: Ammonium hydroxide

Common Acids:

• Tartaric acid (tamaird)

• Lactic acid (curd)

• Citric acid (lemon)

• Acetic acid (vinegar)

True or False:

• Oxides of metals are acidic: False (most are basic)

• Table salt is acidic: False (generally neutral)

• Metal corrodes due to salt: True

• Salts are neutral: False (some depend on composition)

pH Classification:

• Acidic: HCl, H2SO4, HNO3

• Basic: MgO, CaO, Na2CO3

• Neutral: NaCl, KCl, H2O