Magnesium & Acid
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Pour 25cm3 of each molarity of acid into a test tube. Then drop in a 2cm strip of magnesium. As soon as the magnesium strip drops, start the stop clock. When the magnesium is no longer visible, stop the stop clock and record the time. When the magnesium strip is dropped in a gas appears and it gives off a hissing noise. We can work out the name of this gas by solving a simple equation:
Hydrogen Chloride + Magnesium = Magnesium Chloride + Hydrogen 2HCL + Mg = MgCL2 + H2
Or collect this gas and test it with the 'POP“ test to identify it as Hydrogen. Do this with each of the different molarities and repeat this again at least two more times to ensure that an accurate result is achieved.
BOILING TUBE
ACID OF DIFFERENT MOLARITIES
MAGNESIUM STRIP (2CM)
BOILING TUBE
MAGNESIUM CHLORIDE (THE MAGNESIUM HAS REACTED WITH THE ACID AND HAS DISSAPPEARED)
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