Question

Complete the following and write the corresponding chemical equation:

(a)Magnesium +Oxygen

(b)Magnesium oxide + water

(c)Copper sulphate + iron

(d)Baking soda + acetic acid​

Answer 1

Answer:

1 When magnesium reacts with oxygen, it produces light bright enough to blind you temporarily. Magnesium burns so bright because the reaction releases a lot of heat. As a result of this exothermic reaction, magnesium gives two electrons to oxygen, forming powdery magnesium oxide (MgO).

2 Magnesium Oxide also reacts with water to produce the. corresponding hydroxide, magnesium hydroxide. The reaction mechanisms are as follows: Mg + 2H2O = Mg (OH)2 + H2. MgO + H2O = Mg (OH)2.

3 When an iron nail is dipped in copper sulphate solution, a brown coating of copper is formed on the surface of iron and the colour of copper sulphate solution changes from blue to light green.

4 When baking soda is mixed with vinegar, something new is formed. The mixture quickly foams up with carbon dioxide gas. ... Sodium bicarbonate and acetic acid reacts to carbon dioxide, water and sodium acetate.

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