Question

Equal lengths of magnesium ribbon are taken in two test tubes A and B. H2
SO4 is added to test tube A and H2CO3 in test tube B in equal amounts.
a) Identify the test tube showing vigorous reaction.
b) Give reasons to support your answer.
c) Name the gas liberated in both the test tubes. How will you prove its liberation ?
d) Write chemical equations for both the reactions?
e) Out of the two acids taken above, which one will have lower pH value and lower H+ concentration respectively ?

Answer 1

१) test tube will show more vigorous reaction because of strong acid H2SO4

alkali metals liberate H२ when mixed with Acids

Mg+H२SO4====>MgSO4//+H२

H२SO4will have lower Ph value