Na2S + HCl → NaCl + H2S
Determine a specific chemical equation which interests you, labeling the states of the compounds in your equation (s/l/g/aq). Find a real-world use for your chosen chemical reaction, such as the combustion reaction of glucose and oxygen yielding carbon dioxide and water in your cells.

6CO₂(g) + 6H₂O(l) → C₆H₁₂O₆(s) + O₂(g)

Explanation:

In our real life we can have the example of chemical reaction that is photosynthesis.  In the photosynthesis of plants, plants making their food by means of using water in the liquid state, carbon-di-oxide in the gaseous state obtained from the sun to produce glucose and water, in which glucose is in the solid state and oxygen is in the gaseous state. The balanced equation can be given as,

6 CO₂(g) + 6 H₂O(l) → C₆H₁₂O₆(s) + O₂(g)

in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

explanation: