One way in which the useful metal copper is produced is by dissolving the minera

Question

One way in which the useful metal copper is produced is by dissolving the mineral azurite, which contains copper() carbonate, in concentrated The sulfuric acid reacts with the copper(I) carbonate to produce a blue soluti metal precipitates out because of the following chemical reaction: on of copper(II) sulfate. Scrap iron is then added to this solution, and pure Fe(s) + CuSO4(aq) Cu(s) + FeSO4(aq) ist analyzes a sample from a copper processing plant in the following way. He adds powdered iron to a 150. mL e from the plant until no more copper will precipitate. He then washes, dries, and weighs the precipitate, and finds that it has a mas of 65. mg Calculate the original concentration of copper(II) sulfate in the sample. Be sure your answer has the correct number of significant digits

Explanation / Answer

Mass of copper (Cu) produced = 65 mg = 65 g / 1000 =0.065 g

Molar mass of Cu = 63.546 g/mol

Number of moles of Cu produced = 0.065 g / 63.546 g/mol = 0.001 mol

From rection,

Number of moles of Cu produced = number of moles CuSO4 reacted

So number of moles of CuSO4 reacted = 0.001 mol

Molar mass of CuSO4 = 159.61 g/mol

Mass of CuSO4 reacted = 159.61 g/mol * 0.001 mol = 0.15961 g

Volume of CuSO4 = 150 ml = 150 L / 1000 = 0.150 L

Concentration of Copper (II) Sulfate = 0.15961 g / 0.150 L = 1.064 g/L = 10.64 * 10^-1 g/L

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