Question

in the lab, preparation of H2, what happens when: i)we use a lump of Zn instead of granules. ii) In the place of dilute HCL, we use dilute H2SO4 iii) If we use Ca in place of Zn iv) When flame is brought near the evolved gas

Answer 1

Answer:

Zinc reacts with sulfuric acid to produce hydrogen. The reaction is catalysed by copper. The rate of reaction can be compared by means of the rate of production of hydrogen gas bubbles.

Explanation:

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