Question

Give
one
example
of
a
chemical
reaction


characteristic
in
the
diagram​

Answer 1

Answer:

1.Evolution of gas:

The chemical reaction between zinc and dilute sulphuric acid is characterized by the evolution of hydrogen gas.

Zn(s) + H² SO4(aq) → ZnSO⁴ (aq) + H² (g)

2.Change in colour:

The reaction between the lead nitrate solution and potassium iodide solution.

Pb(NO³)² (aq) + 2KI → PbI² (s) + 2KNO³ (aq)

In this reaction colour changes from colourless to yellow.

3.Formation of precipitate:

The action of Barium Chloride on sodium sulphate.

BaCl² (aq) + Na² SO⁴ (aq) → BaSO⁴ (s) + 2KNaCl(aq)

4.Change in temperature:

The action of dilute sulphuric acid on zinc:

Zn(s) + H²SO⁴ (aq)→ZnSO⁴ (s) + H² (g)

In this reaction, heat is evolved.

5.Change in the state:

When the wax is burnt in the form of the wax candle then water and carbon dioxide are formed. Wax is solid, water is a liquid whereas carbon dioxide is a gas.

Hope it helps you army..

Have a bangtastic day ahead :)

Answer 2

Answer:

1.Evolution of a gas.

2.Change in colour.

3.Formation of a precipitate.

4.Change in temperature.

5.Change in state.