COPPER REDUCTION AND RECOVERY

Due Today: 1. Copper Reduction Pre-Lab

Homework:1. Copper Reduction Formal Lab Report

2. Redox Titration Pre-Lab

Recover a copper sample via reduction reaction

Determine the effi cacy of the experiment

OBJECTIVE

Oxidation-Reduction (Redox) Reaction:

Follow the transfer of electrons

Matched reaction – you cannot have one

without the other

KEY TERMS

Part I: Preparation of Copper Solution

Calculate the amount of CuSO4˙5H2O needed

DO NOT forget to include the 5 water molecules

Check your calculation before you make your

solution

PROCEDURE NOTES

USE A VOLUMETRIC FLASK TO MAKE YOUR

SOLUTION!!!

Use a 400 mL beaker to heat and stir your

solution

Work in the hood

PROCEDURE NOTES

Part II: Reduction of Copper

Calculate the amount of zinc needed to react with thecopper (II) sulfate

Check your zinc calculation before you proceed

The solution should be colorless at the end of 30 minutes

May take less than 30 minutes

PROCEDURE NOTES

Part III: Separation of Copper

Vacuum filtration

Weigh the filter paper

Place sample in the over to dry (optional)

PROCEDURE NOTES

Determine the mass of your copper

Tare a watch glass (zero the balance)

Use a micro spatula to put your copper sample and filter paper onto the watch glass

PROCEDURE NOTES

Recovered copper – solid waste container

Filter Paper – Trash can

Filtrate – Copper recovery filtrate container

WASTE

Hydrochloric AcidDanger

Inhalation Hazard

Corrosive

RISK ASSESSMENT

EthanolDangerFlammableRespiratory Irritant

AcetoneDangerFlammableSkin Irritant

RISK ASSESSMENT