Question

what happen when
1 magnesium ribbon is burnt in air
2 an acid react with base
3 iron nail is dipped in copper sulphate solution
4 electric current is passed through water
5 calcium carbonate I heated

plz tell answer ​

Answer 1

1) The ribbon burns with a bright white light. Intense heat is also produced in this reaction. Here, when magnesium burns, it reacts with the oxygen found in air to form a powdery ash called magnesium oxide. Chemical equation: Magnesium plus Oxygen gives Magnesium oxide.

2) The reaction of an acid with a base is called a neutralization reaction. The products of this reaction are a salt and water. ... For example, the reaction of hydrochloric acid, HCl, with sodium hydroxide, NaOH, solutions produces a solution of sodium chloride, NaCl, and some additional water molecules.

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 an electric current is passed through water, “Electrolysis of water” occurs, which is the decomposition of water (H2O) into hydrogen gas (H2) and oxygen (O2). ... Hydrogen gas forms at the cathode where the electrons enter the water and at the anode, oxygen is formed.

5) Calcium carbonate is strongly heated until it undergoes thermal decomposition to form calcium oxide and carbon dioxide. The calcium oxide (unslaked lime) is dissolved in water to form calcium hydroxide (limewater). Bubbling carbon dioxide through this forms a milky suspension of calcium carbonate.

Answer 2

Answer:

the 5th one I'm written here...

calcium carbonate is strongly heated until it undergoes thermal decomposition to form calcium oxide and carbon dioxide the calcium oxide is ( unslaked lime) is dissolved in water to form calcium hydroxide ( limewater).

Explanation:

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