6 mol sample of Cu2S is roasted in excess O2 to yield Cu metal and SO2. Calculate the mass of Cu metal produced
I'm skeptical that this reaction produces elemental Cu.
To calculate the mass of Cu metal produced, we need to use stoichiometry to determine the balanced equation and the molar ratio between Cu2S and Cu metal.
The balanced equation for the reaction is:
2 Cu2S + 3 O2 -> 2 Cu + 2 SO2
From the balanced equation, we can see that 2 moles of Cu2S react to produce 2 moles of Cu. Therefore, the molar ratio between Cu2S and Cu is 2:2 or 1:1.
Given that we have a 6 mol sample of Cu2S, we can calculate the moles of Cu produced using the molar ratio:
Moles of Cu = Moles of Cu2S
Moles of Cu = 6 mol
Since the molar mass of Cu is 63.546 g/mol, we can calculate the mass of Cu using the formula:
Mass of Cu = Moles of Cu x Molar mass of Cu
Mass of Cu = 6 mol x 63.546 g/mol
Mass of Cu = 381.276 g
Therefore, the mass of Cu metal produced is 381.276 grams.