Ores can be composed of many different components, including lead sulfide (PbS). The amount of lead sulfide in an ore can be determined through the reaction: 2 PbS(s)+ 6 HNO₃(aq)+ K₂Cr₂O₇(aq)2 PbCrO₄(s)+ 2 S(s)+ 4 NO₂(g)+ 2 KNO₃(aq)+ 3 H₂O If a 6.053 g sample of ore that was treated with excess nitric acid and potassium dichromate yielded 6.094 g of PbCrO₄, calculate the percent, by weight, of lead sulfide in the ore. Hint: Convert the masses to moles and calculate as you would for other stoichiometric calculations.

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The Answer of Ores can be composed of many different components, including lead sulfide (PbS). The amount of lead sulfide in an ore can be determined through the reaction: 2 PbS(s)+ 6 HNO₃(aq)+ K₂Cr₂O₇(aq)2 PbCrO₄(s)+ 2 S(s)+ 4 NO₂(g)+ 2 KNO₃(aq)+ 3 H₂O If a 6.053 g sample of ore that was treated with excess nitric acid and potassium dichromate yielded 6.094 g of PbCrO₄, calculate the percent, by weight, of lead sulfide in the ore. Hint: Convert the masses to moles and calculate as you would for other stoichiometric calculations.

Ores Can Be Composed of Many Different Components, Including Lead