Question 13 Marks
Using dilute sulphuric acid only how will you distinguish between the following: State clearly the chemical reactions taking place and the tests for the gase2ous products.
Answer
View full question & answer→(a) Magnesium carbonate and magnesium sulphide.
The dissolution reaction of magnesite in sulphuric acid solutions can be described by the following equation: MgCO3(s)+H2SO4(aq)→MgSO4(aq)+CO2(g)+H2O(l) , the gas CO2 turns lime water milky while magnesium sulphide not turn milky.
(b) Magnesium and lead.- when magnishium react with sulphuric acid then product hydrogen gas evolve which produce pop sound near flame while lead not
Mg ( s ) Magnesium + H 2 SO 4 ( aq ) Sulphuric acid → MgSO 4 ( aq ) Magnesium sulfate + H 2 ( g ) Hydrogen
The dissolution reaction of magnesite in sulphuric acid solutions can be described by the following equation: MgCO3(s)+H2SO4(aq)→MgSO4(aq)+CO2(g)+H2O(l) , the gas CO2 turns lime water milky while magnesium sulphide not turn milky.
(b) Magnesium and lead.- when magnishium react with sulphuric acid then product hydrogen gas evolve which produce pop sound near flame while lead not
Mg ( s ) Magnesium + H 2 SO 4 ( aq ) Sulphuric acid → MgSO 4 ( aq ) Magnesium sulfate + H 2 ( g ) Hydrogen