When magnesium ribbon is burnt in air, then identify the type of reaction and colour of ash formed.
Colour of ash formed:- White
Type of reaction:- Combination
When magnesium ribbon is burnt in air then it will form magnesium oxide MgO powder which is white in colour. It is a combination reaction as magnesium and oxygen combine to form magnesium oxide.
2Mg(s) + O2(g) → 2MgO(s)