Chile saltpeter is a natural source of NaNO3; it also contains NaIO3. The NaIO3

Question

Chile saltpeter is a natural source of NaNO3; it also contains NaIO3. The NaIO3 can be used as a source of iodine. Iodine is produced from sodium iodate in a two-step process occurring under acidic conditions: IO3-(aq) + HSO3-(aq)-----> I-(aq) + SO42-(aq) (not balanced) I-(aq) + IO3-(aq) ----> I2(s) + H2O(l) (not balanced). A 4.60-L sample of a NaIO3(aq) solution containing 5.65 g; NaIO3/L is treated with the stoichiometric quantity of NaHSO3 (no excess of either reactant). Then, a further quantity of the initial NaIO3(aq) is added to the reaction mixture to bring about the second reaction. HELP! (a) How many grams of NaHSO3 are required in the first step? (b) What additional volume of the starting solution must be added in the second step?

Explanation / Answer

use the Pearson's chi square test

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