Question

1.Take a some cold water in a beaker and add two drops of
phenolphthalein to it. Put a small piece of sodium metal into it and observe
the reaction ?
a) What is the colour change obtained the solution?
b) What is the reason for the colour change of the solution?
c) Write down the chemical equation of this chemical reaction ?
2. Magnesium reacts with hot water to produce hydrogen gas. Write down its balanced chemical equation ?​

Answer 1

Explanation:

1. the colour will change into pink.

2. because of phenolphthalein.

3. 2Na+ 2H2O➡️ 2NaOH + H2

4. Mg+H2O➡️ MgO+ H2