1. Portions of 1.0 M EDTA titrant (K=0.9872) were added to 25.0 ml of strontium salt solution in a calorimetric beaker and the heat of reaction was measured. The deviations of the instrument scale in scale divisions were:
V(titrant), ml 0.5 1.0 1.5 2.0 2.5 3.0
A, scale divisions 5.5 11.0 17.0 17.0 17.5 17.5 17.5
Calculate the strontium concentration (g/l) in the test solution.

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