Problem: For many years the extraction of gold-that is, the separation of gold from other materials-involved the use of potassium cyanide:4Au + 8KCN + O2 + 2H2O → 4KAu(CN)2 + 4KOHWhat is the minimum amount of KCN in moles needed to extract 32.8 g of gold?

FREE Expert Solution
96% (253 ratings)
FREE Expert Solution
96% (253 ratings)
View Complete Written Solution
Problem Details

For many years the extraction of gold-that is, the separation of gold from other materials-involved the use of potassium cyanide:

4Au + 8KCN + O2 + 2H2O → 4KAu(CN)2 + 4KOH

What is the minimum amount of KCN in moles needed to extract 32.8 g of gold?

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Stoichiometry concept. You can view video lessons to learn Stoichiometry. Or if you need more Stoichiometry practice, you can also practice Stoichiometry practice problems.

What is the difficulty of this problem?

Our tutors rated the difficulty ofFor many years the extraction of gold-that is, the separatio...as low difficulty.

How long does this problem take to solve?

Our expert Chemistry tutor, Dasha took 2 minutes and 55 seconds to solve this problem. You can follow their steps in the video explanation above.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Malina's class at UNL.