Answer the Question according to the Answer.

Question

Take a few zinc granules in a conical flask or a test tube. Add dilute hydrochloric acid or Sulphuric acid to this. Do you observe anything happening around the zinc granules ? Touch the conical flask or test tube. Is there any change in its temperature ? Write the equation for the same.

Answer 1

When conc. HCl is added to flask containing Zn granules, zinc chloride is formed.

Zn + 2HCl → ZnCl₂ + H₂

Effervescence of H₂ gas will be observed in this reaction.

As the reaction is exothermic reaction, temperature of the flask will increase which can be felt by touching.