How to calculate the equivalent weight of na2co3?

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Detailed Solution

Equivalent Weight of Na2CO3

Find the molar mass of Na₂CO₃:
- Sodium (Na): 23 × 2 = 46
- Carbon (C): 12 × 1 = 12
- Oxygen (O): 16 × 3 = 48
- Total molar mass = 46 + 12 + 48 = 106 g/mol
Determine the n-factor (the total positive or negative charge that participates in the reaction):
In acid-base reactions, sodium carbonate (Na₂CO₃) accepts two protons (H⁺) to form sodium bicarbonate (NaHCO₃) and then carbonic acid (H₂CO₃) or CO₂. Thus, the n-factor is 2 for complete neutralization.
Apply the formula:
Equivalent weight =
Molar massn-factor
= 106 / 2 = 53 g/equiv

Therefore, the equivalent weight of Na₂CO₃ is 53 g/equiv for acid-base reactions.

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