Question

Observe the given image carefully and answer the following questions. a. What happens when dilute Sulphuric acid is poured from the thistle funnel? b. Why is hydrogen gas not collected by the downward displacement of air? c. Why is granulated zinc and not pure zinc used for the preparation of hydrogen gas in laboratory. d. Why is a naked flame not brought near the apparatus producing hydrogen gas? e. Write the chemical equation involved in the above mentioned process.

Answer 1

a) hydrogen gas is produced

B) because it is one of the lightest gas

c) because it is highly exothermic reaction

d) because it is dangerous for the person

e)Zn+HCl--ZnCl+H2