1. Arsenic can be extracted from its ores by first reacting the ores with oxygen (called roasting) to form solid As 06 which is then reduced using carbon according to the following equation:
As 06(s) + 6 C(s) As4(g) + 6 CO (8)
Predict the direction of the shift of the equilibrium position in response to each of the following
changes in conditions.
A. addition of CO
B. removal of CO
C. removal of As4
D. addition of As4
Answers: 3
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