Question

Q3 Give reasons for the following:
1 Nitric acid in the dilule form is not used in the laboratory preparation of hydrop e m
2 Granulated zinc is preferred to metallic zine in the preparation of hydrown using dilu
Hydrogen and alkali metals of group 1 |IA| react with copper | oxide to move copper
4 Hydrogen in collected by the downward displacement of water and not wir even though
is lighter than air
5. A mixture of hydrogen and chlorine can be separated by passage through a porous por​

Answer 1

Answer:

1 this is because nitric acid is strong oxidizing agent

2 it is used as it contains copper as impurity this copper is act as a catalyst and help to speed up reaction.

4 because it forms an explosive mixture with air

5