4. Balance the following reactions Unbalanced PbO₂ ⇒ PbQ+0₂ Fe2(SO4)3 + Ba(OH)2 ⇒ BaSO4 + Fe(OH)3 Al + CuSO4 → Al2(SO4)3 + Cu FeCl₂ + Na3PO4 Fe3(PO4)2 + NaCl Balanced

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Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.