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whats the balanced chemical equation
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∙ 15y ago
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What scientific conclusion can be made about combining Copper Chloride and Aluminum Foil?
The two are highly reactive when mixed in water. If you add aluminum to a water solution of copper chloride, the aluminum will be combined as aluminum chloride gas, releasing the copper into the water. The mixture will turn very hot, bubble up, and start to smoke, and the color will change from blue to dark red. ========================= The first sentence is correct, the two are highly reactive, but from there on, there are problems... There's no such thing as aluminum chloride gas. There is a gas given off, but it is hydrogen gas. The "smoke" is actually tiny droplets of water condensed from water vapor. It gets that hot. The red color is due to the formation of copper metal a Cu2+ ions are reduced to the metal as aluminum metal is oxidized. Aluminum metal has a thin coating of aluminum oxide, Al2O3, covering the surface. Even freshly scraped aluminum metal will quickly reform the passivating layer of aluminum oxide. So in many solutions, the layer of Al2O3 prevents any aluminum metal from reacting. If aluminum metal is placed in a solution of copper(II) sulfate, you will not get a reaction. No copper metal will form on the aluminum. But when placed in copper(II) chloride, aluminum will give a vigorous reaction with a lot of heat and hydrogen gas being given off. The reason is the chloride ion. In the presence of chloride ion, the Al2O3 layer dissolves forming the AlCl4^- in solution and exposing a fresh layer of aluminum metal. The aluminum metal will reduce copper(II) ions to copper metal, AND the aluminum metal will react with water very much like an alkali metal reacts with water, vigorously, with a lot of heat given off, and with the formation of hydrogen gas. Al2O3 + 8Cl- + 3H2O --> 2AlCl4^- + 6OH- Al(s) + OH- + 2H2O --> Al(OH)3(s) + H2(g) 2Al(s) + 3Cu2+ --> 2Al3+ + 3Cu(s)
Is stretching wire into copper a physical or chemical change?
If you meant to ask, "Is stretching copper into wire a physical or chemical change", it's a physical change.
Is copper sulphate a physical change or chemical?
Copper sulfate is a substance, not a change. It can undergo physical and chemical changes.
Is heating potassium chloride crystals a physical or chemical change?
it is as i think a physical change
Is a piece of copper cut in half a physical or chemical change?
Physical change
Physical change copper chloride aluminum foil experiment?
It's a chemical change. The aluminum foil is rusting, which cannot be undone, meaning that this is a chemical change, not a physical. Physical changes can be reversed.
Is the reaction between aluminum and copper chloride a physical or chemical change?
All chemical reactions are chemical changes.
Aluminum bends easily is physical or chemical change?
Aluminum bending is a physical change. This is because the aluminum is still the same aluminum as it was before just in a different shape.
Is tearing aluminum foil a chemical change or physical change?
Physical. It's still aluminum foil.
What chemical change is mixing chloride and aluminum?
This is a chemical reaction; synthesis of aluminium chloride.
Is hammering aluminum into sheets a physical change or chemical change?
Physical
Is copper a physical or chemical change?
its a physical change
Is stretching copper into wire physical or chemical change?
If you meant to ask, "Is stretching copper into wire a physical or chemical change", it's a physical change.
Is aluminum foil cut in half a physical or chemical change?
It is a physical change because it can be reversed. All you have to do is weld the foil back together!
Is drawing copper into wire a physical property or a physical change?
Yes, it is. You aren't altering the chemical composition at all - it's still copper - you are merely changing its shape.
Is tearing aluminum a physical or a chemical change?
Physical. It's still aluminum foil.
Is calcium chloride melting the ice a chemical or physical change?
It is a physical change.
