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chemistry

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J. J. Berzelius collected the following data for three reactions:
Reaction 1 – 11.56 grams of lead sulfide, PbS, were formed when 10.0 grams of lead reacted with 1.56 grams of sulfur
Reaction 2 – 11.56 grams of lead sulfide were formed when 10.0 grams of lead reacted with 3.00 grams of sulfur
Reaction 3 – 11.56 grams of lead sulfide were formed when 18.0 grams of lead reacted with 1.56 grams of sulfur. Explain his observations in terms of the concept of limiting reactants.

  • chemistry -

    Pb + S ==> PbS
    10.0..1.56..11.56
    10.0..3.00..11.56
    18.0..1.56..11.56

    10.0g Pb and 1.56 g S are the stoichiometric quantities for PbS to form. Anything more than 10.0 g Pb/1.56 g S will not produce anymore PbS. That is, 10.0 g Pb and more S than 1.56 still produces 11.56g PbS and 1.56 g S and more Pb than 10.0 g will still produce only 11.56g PbS.

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