Solution Found!
For many years the recovery of gold—that is, the
Chapter 3, Problem 74P(choose chapter or problem)
For many years the recovery of gold—that is, the separation of gold from other materials—involved the use of potassium cyanide:
\(4 \mathrm{Au}+8 \mathrm{KCN}+\mathrm{O}_{2}+2 \mathrm{H}_{2} \mathrm{O} \longrightarrow4 \mathrm{KAu}(\mathrm{CN})_{2}+4 \mathrm{KOH}\)
What is the minimum amount of \(\mathrm{KCN}\) in moles needed to extract 29.0 g (about an ounce) of gold?
Questions & Answers
QUESTION:
For many years the recovery of gold—that is, the separation of gold from other materials—involved the use of potassium cyanide:
\(4 \mathrm{Au}+8 \mathrm{KCN}+\mathrm{O}_{2}+2 \mathrm{H}_{2} \mathrm{O} \longrightarrow4 \mathrm{KAu}(\mathrm{CN})_{2}+4 \mathrm{KOH}\)
What is the minimum amount of \(\mathrm{KCN}\) in moles needed to extract 29.0 g (about an ounce) of gold?
ANSWER:Step 1 of 2
Here we have to calculate the minimum amount of KCN in moles needed to extract 29.0 g (about an ounce) of gold
The given chemical reaction is,
