TO MAKE A BASE

OBJECTIVE: TO MAKE A BASE

MATERIALS REQUIRED

1. Magnessium Ribbon                      2. Porcelain Basin

3. Litmus Paper (Blue)                       4. Phenolphthalein

5. Beaker                                          6.Water

THEORY

Some metals like magnesium, iron, sodium when burn in oxygen, react with oxygen to form their oxides which dissolve in water to form alkalis. These oxides are called basic oxides. Magnesium metal burns in oxygen and reacts with oxygen to form magnesium oxide.

Magnesium + Oxygen                Magnesium oxide

2 Mg + 0₂                     2MgO

Magnesium oxide dissolves in water to some extent to form magnesium hydroxide, an alkali.

Magnesium Oxide + Water              Magnesium hydroxide

          MgO  +   H₂O                         Mg (OH)₂

OBSERVATION

Magnesium reacts with oxygen present in air and forms a white substance called magnesium oxide. This magnesium oxide is a base (MgO). After dissolving in water it forms an alkali, Mg (OH)_2.Which turned RED litmus paper into BLUE. When few drops of PHENOLPHTHALEIN were added, it was turned into pink.

CONCLUSION

During this experiment we made a base.