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Chem Hmwrk

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Iodine can be prepared by bubbling chlorine gas through an aqueous solution of sodium iodide:

2NaI(aq) + Cl2(g) → I2(s) + 2NaCl(aq)

How many grams of sodium iodide are required to produce 98 g of iodine?

  • Chem Hmwrk -

    mols I2 = grams/molar mass
    Use the coefficients to convert mols I2 to mols NaI. 2 mols NaI = 1 mol I2; therefore mols NaI = 2x mols I2.
    grams NaI = mols NaI x molar mass NaI.

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