Take a few zinc granules in a conical flask or 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.
Answers
Answer:
Explanation:
yes there will be an evolution of hydrogen gas and the flask will become hot. this is short
Answer:
temperature may become hot, And if you take this near a fire,we can hear a pop up sound as well
Explanation:
The zinc will react with sulphuric acid forming zinc sulphate dissolved in solution and releasing hydrogen gas.
Zn (s) + H2SO4 (aq) ---> ZnSO4 (aq)+ H2 (g)
When we take the test tube containing zinc and sulphuric acid near a candle or a burner, we hear a pop sound. This shows the presence of Hydrogen .
Also, if we take the the test tube near a litmus paper, the color remains same. This shows that hydrogen is neither acidic nor basic in nature. It is neutral in nature.
if we use, hydrochloric acid zinc chloride, and hydrogen will be formed as well