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Lab Report 5D: Hi

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Lab Report 5D: Hi
Title: Experiment 5D – Investigating the Differences in Activity of Metals

Purpose: To make observations of the types of reactions, write equations for those chemical reactions, practice balancing those reactions while determining the relative activity of the metals included in the lab.

Materials:

Apparatus
Test-tube rack
4 test tubes (25 mm x 150 mm)
4 beakers (150 mL)
Safety goggles
Lab apron
Plastic gloves
Full face shield
Reagents
Zinc
Magnesium
Iron
Copper
1M hydrochloric acid, HCl
1M sulphuric acid, H2SO4
1M acetic acid, HC2H3O2
1M phosphoric acid, H3PO4

Procedure: Please refer to Health Chemistry, Laboratory Experiments, page(s) 75-76.

Data and Observations:

Table 1: Comparison of Metal Activities

Zinc
Magnesium
Copper
Iron
Hydrochloric acid
Small bubbles
Many bubbles
N.R.
color change (black)
Sulfuric
acid
Small bubbles
Many bubbles
N.R.
N.R.
Phosphoric acid
Small bubbles
Few Bubbles
N.R.
N.R.
Acetic
acid
Small bubbles
Large amounts of bubbles
N.R.
N.R.

Table 2: Comparison of Acid Activities

Hydrochloric acid
Sulfuric acid
Phosphoric acid
Acetic acid

Magnesium
Color change (yellow)

Bubbling and fizzing

Liquid is translucent

Small amounts of smoke present
Bubbling and fizzing

Metal appears to be dissolving

Bubbling only
Color change (smoke white)

Bubbling and fizzing

Metal appears to be dissolving

Questions and Calculations:

1) Using the results of all the conducted experiments, I found the metals with the most activity to the least activity. The following metals are ranked from most or lots of activity to least or no activity:
1) Magnesium (Mg)
2) Zinc (Zn)
3) Iron (Fe)
4) Copper (Cu)

Magnesium (Mg), Zinc (Zn), Iron (Fe), and Copper (Cu).
2)

Reactions for Zinc:

Zn + HCl = ZnCl2 + H2 (unbalanced)
Zn + 2 HCl = ZnCl2 + H2 (balanced) zinc + hydrochloric acid = zinc chloride + hydrogen (name of
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