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amid [387]
4 years ago
7

A source of zinc metal can be zinc ore containing zinc(II) sulfide. The ore is roasted in pure oxygen to produce the oxide and t

hen reduced with carbon to form elemental zinc and carbon monoxide. 2 ZnS + O2 2 ZnO + 2 SO2 ZnO + C Zn + CO A crucible containing a sample of 0.50 mol ZnS was roasted in pure oxygen, then reduced with 1.00 mol carbon. What mass remained in the crucible after cooling?
Chemistry
1 answer:
morpeh [17]4 years ago
5 0

Answer:

32.7 grams of Zn will remained in the crucible after cooling.

Explanation:

2ZnS+3O_2 \rightarrow 2ZnO + 2SO_2..[1]

ZnO+C\rightarrow Zn+CO..[2]

Adding [1] + 2 × [2] we get:

2ZnS+3O_2+2C \rightarrow 2Zn + 2CO+2SO_2..[3]

Moles of ZnS in crucible = 0.50 mol

According to reaction [3]. 2 moles of ZnS gives 2 moles of Zn.

Then 0.50 moles of ZnS will give:

\frac{2}{2}\times 0.50 mol=0.50 mol of Zn.

Mass of 0.50 moles of Zn =

= 0.50 mol × 65.4 g/mol =32.7 g

32.7 grams of Zn will remained in the crucible after cooling.

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