Please answer last two points
Dear student
Since you asked the answer to last two points of the question so,
Zn + HCl gives ZnCl2 + H2
so, Zn gets used up in the reaction, hence Zn granules start dissolving when acid is put .
Upon touching the conical flask, the surface is hot to touch, hence the reaction is exothermic.
REGARDS
Since you asked the answer to last two points of the question so,
Zn + HCl gives ZnCl2 + H2
so, Zn gets used up in the reaction, hence Zn granules start dissolving when acid is put .
Upon touching the conical flask, the surface is hot to touch, hence the reaction is exothermic.
REGARDS