• # question_answer A piece of burning magnesium ribbon continues to burn in sulphur dioxide. Explain.

A piece of magnesium ribbon continues to burn in $S{{O}_{2}}$ since it reacts to form MgO and S. $2\,Mg+S{{O}_{2}}\xrightarrow{Heat}\,2\,MgO+S$ This reaction is so much exothermic that heat evolved keeps the magnesium ribbon burning.