Electrolysis and Copper Production Concepts

This video tutorial explains how to calculate the mass of substances produced during the electrolysis of copper chloride. It covers two main methods: using reacting masses and ratios, and using charge and current. The video provides step-by-step examples and highlights key facts about moles, molecular mass, and electron transfer. It concludes with a summary of the methods discussed.

What is the primary result of the electrolysis of molten copper chloride?

• Copper metal and water

• Copper metal and chlorine gas

• Copper metal and oxygen gas

• Chlorine gas and hydrogen gas

Which of the following is equivalent to one mole of a gas?

• 36 decimeter cubed

• 24 decimeter cubed

• 48 decimeter cubed

• 12 decimeter cubed

In the electrolysis of copper chloride, what is the ratio of copper to chlorine gas produced?

• 1:2

• 2:1

• 1:1

• 3:1

If half the moles of copper chloride are used, what mass of copper is produced?

• 47.63 grams

• 31.75 grams

• 15.88 grams

• 63.5 grams

What is the charge of one mole of electrons, also known as a Faraday?

• 100000 coulombs

• 50000 coulombs

• 96500 coulombs

• 5000 coulombs

How many coulombs are transferred when a current of 2 amps is applied for 1 hour?

• 3600 coulombs

• 7200 coulombs

• 14400 coulombs

• 1800 coulombs

What is the relationship between moles of electrons transferred and moles of copper produced?

• 2 moles of electrons produce 2 moles of copper

• 1 mole of electrons produces 2 moles of copper

• 2 moles of electrons produce 1 mole of copper

• 1 mole of electrons produces 1 mole of copper

How many moles of copper are produced from 0.0746 moles of electrons?

• 0.0185 moles

• 0.0746 moles

• 0.1492 moles

• 0.037 moles

What is the mass of copper produced from 0.037 moles of copper?

• 2.37 grams

• 1.85 grams

• 4.74 grams

• 3.17 grams

Which method involves using the formula q = i × t to calculate masses in electrolysis?

• Using reacting masses and ratio

• Using the charge formula

• Using empirical formulas

• Using molar volume of gases