What is the equivalent mass of sodium carbonate ?
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Equivalent Weight = Molar weight of the Compound ÷ Charge on the Compound. So, Gram Equivalent Weight of CaCO3 = 100 ÷ 2 = 50.
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Equivalent weight of sodium carbonate
Molecular formula of sodium carbonate : Na₂CO₃. So, molecular weight = 2 × 23 + 12 × 3 × 16 = 106 g/mol. Here we can observe : Na₂CO₃ ⇔ 2Na⁺ + CO₃⁻⁻. Hence, n - factor = change in oxidation number = 2 - 0 = 2. So, equivalent weight = molecule weight/n-factor = Molecular weight/2. This way , equivalent of Na₂CO₃ = 106/2 = 53.
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