On the left side a concentrated sodium hydroxide solution, in the middle a glass with a thermocouple measuring the temperature, on the right side a concentrated hydrochloric acid.
The soda is poured into the glass.
Note the temperature!
The chlorhydric acid is added rien !!
The temperature soars. That is the proof that a chemical reaction took place.
$Na^+ + $ $OH^- + H^+$$ + Cl^- \longrightarrow $$H_2O$$ + Na^+ + Cl^-$
Products: water and a colourless sodium hydroxide solution!
On the left side a concentrated sodium hydroxide solution, in the middle a glass with a thermocouple measuring the temperature, on the right side a concentrated hydrochloric acid.
