Estimation of Calcium - Permanganametric Titration

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Volume of KMno4  
Normality of KMno4  
Sample weight  
Description (-)
Estimate the Calcium by Permanganametric Titration, where calcium is precipitated as calcium-oxalate using ammonium oxalate in acidic medium.

Formula:
Percentage of Calcium = ( Volume of KMno4 * Normality of KMno4 * 250 * 100 * 20 / Sample weight * 25 * 1000)

Where,
KMno4 - Potassium permanganate
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