Question

Given the following data from a experiment :

Mass (g) of Dry Empty beaker : 69.3527

Mass (g) of beaker and calcium bicarbonate : 69.5325

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volume (ml) of EDTA used to titrate 10 mL Ca2+ standard Solution :

Trial 1 :18.32

Trial 2: 18.45  

Trial 3: 18.35

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Volume (mL) of EDTA used to titrate 20 mL of unknown Ca2+ solution

Trial 1: 25.13

Trial 2: 25.02

Calculate

A) What is the mass (g) of calcium bicarbonate used in the standard?

B) Average volume (mL) of EDTA used to titrate standard ?

C) Molarity (M) of CaCO3 standard ?

D) Molarity (M) of EDTA (Based on average volume)

E) Average volume (mL) OF EDTA for 20 mL of unknown ?

F) Molarity (M) of Ca2+ in unknown?

Please show step by step

Answer 1