Question

please help me its very urgent​

Answer 1

Solid sodium chloride and liquid concentrated sulphuric acid to produce HCl gas

Answer 2

Answer:

2.in wet blue litmus paper there is change i.e blue litmus Change to red litmus paper

but there is no change in the dry litmus paper bcoz dry litmus paper do not have ions which is present in water

3.Hydrogen ions and Chloride ions

1.i don't know sorry