Question

c) Explain with examples, reactions of metals with different temperatures of water. What could you confer from these reactions? plz explain​

Answer 1

Answer:

Sodium and potassium metals react violently with cold water.

Observations :

1. Metal starts moving over the surface of the water making a hissing sound.

2. Metal starts reacting with water causing little explosion

3. Soon the metal catches fire and starts burning.

Reaction:

2K+2H

2

O→2KOH+H

2

2Na+2H

2

O→2NaOH+H

2

The gas evolved during the reaction can be identified bringing a burning candle near it. The candle burns with a pop sound indicating the evolution of hydrogen gas.

Answer 2

Answer:-

Metals like, iron, aluminium and magnesium will displace hydrogen from dilute sulphuric acid or dilute hydrochloric acid as shown by the equations below:

• look at the!

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