A 150 mL of solution of iodine is divided into two unequal parts, First part reacts with hypo solution in acidic medium. 15 mL of 0.4 hypo solution was consumed. 2nd part was added to 100 mL of 0.3 M NaOH solution. Residual base required 10 mL of 0.3 sulphuric acid solution for complete neutralisation. What was the initial concentration of iodine?
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