Magnesium hydrogen and sulphur combustion

Question 1

Magnesium-

Answer 1

Bright white flame
Mg + O = MgO

Not very soluble but some does dissolve to make an alkaline solution
MgO + H2O = Mg(OH)2-

White, powdery ash

Question 2

Sulfur -

Answer 2

S +o2 = so2

Blue flame

Poisonous, colourless sulfur dioxide gas is produced

Sulfur dioxide dissolves in water to form an acid solution of sulfurous acid

SO2 +H2O = H2SO3

Question 3

Hydrogen-

Answer 3

Pale Blue Flame

H2 + O2 = H2O