28. When sulphuric acid is added to lg solid sodium chloride taken in a
test tube, which gas is released? What changes do you observe when you
test the gas with dry and wet litmus paper? What conclusion do you draw
by this experiment?
OR
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Answer:
HCl gas is produced.
2NaCl + H2SO4 → Na2SO4 + 2HCl
The gas when passed through dry litmus paper will show no change in colour because it cannot show acidic properties as H+ is not present.
The gas when passed through moist litmus paper will show colour change to red.
It shows acidic properties because H+ ions are produced when HCl dissolves in water.
hope it will help u
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