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chemistry

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what mass, in grams of nacl formed from the reaction of 2.75ml of a 6.00M Na2SO4 solution and 8.30ml of a 2.50M solution of HCL

  • chemistry -

    Na2SO4 + 2HCl ==> 2NaCl + H2SO4

    mols Na2SO4 = M x L = estimated 16 but you do it more accurately.
    mols HCl = M x L = estimated 21.

    Now use the coefficients in the balanced equation to convert mols of each into mols NaCl.
    For Na2SO4 that is estimated 16*2 = estimated 32g
    For HCl that is 21 mols x 1 = estimated 21.
    You two values for mols NaCl and i is obvious one of them is wrong. In limiting reagent problems the smaller values if ALWAYS the correct value to choose.
    Now convert mols NaCl to g. g mols x molar mass.

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