Calculate the volume of 0.0500 m edta needed to titrate ca caco3

EDTA is a complex used to determine water hardness. The reaction between EDTA and CaCO₃ is in 1:1 ratio. To solve this problem, we must know the moles of CaCO₃ present (otherwise we can't solve the problem). Suppose you have 0.5 moles of CaCO₃. Since the ratio is 1:1, it would also need 0.5 moles EDTA. Then,

Volume = Moles/Molarity = 0.5 moles/0.05 M = 10 L of EDTA

Abbreviated as mg-25.

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