Question

dilute sulphuric vi acid is added to compound magnesium p solid reacted with acid to form a colourless solution q and colourless gas r which formed white precipitate when bubbled through lime water. what is compound p,solution q and colourless gas r

Answer 1

Compound $p$ is $MgCO_3$

Colorless liquid $q$ is $MgSO_3$

Gas $r$ produces is $CO_2$

The equation for the reaction is;

$MgCO_{3_{(s)}}+H_2SO_{3_{(aq)}}\to MgSO_{3_{(aq)}}+H_2O_{(l)}+CO_{2(g)}$