Magnesium ribbon is burnt in oxygen to give white compound X component by emission of light this compound when dissolved in water it form a compound of y.
a) Write the chemical formulae of X and Y.
b) Write the balanced chemical reaction and equation.
Answers
Answer:
Explan1)
2Mg + O₂ ---> 2MgO
Compound X ==> MgO [ Magnesium Oxide ]
Compound Y ==> Mg₃N₂ [ Magnesium Nitride ]
if "X" , that is , Magnesium Oxide is dissolved in water , the product is Magnesium Hydroxide
MgO + H₂O ---> Mg(OH)₂
This equation is already balanced !!
Magnesium ribbon is burnt in oxygen to give white compound X.
Mg + O2 → Compound X (white in colour)
If Magnesium (Mg) ribbon react with oxygen or if Magnesium ribbon burnt in the presence of oxygen then the formation of Magnesium oxide having formula MgO and energy in the form of light takes place.
The formed Magnesium oxide is white in colour. Also, compound X is Magnesium oxide (MgO)
2Mg + O2 → 2MgO + energy (in the form of light)
Now, if the compound X i.e. MgO reacts with water then the formation of Magnesium Hydroxide having formula Mg(OH)2 takes place.
Compound X + water → Compound Y
MgO + H2O → Mg(OH)2
Both the reactions (discussed above) are an example of Combination Reaction, as two or more reactants combine to form a single product.
a) The chemical formula of compound X = MgO
And the chemical formula of compound Y = Mg(OH)2
b) Balanced chemical reaction and equation
2Mg (s) + O2 (g) → 2MgO (s) + Energy
Magnesium + Oxygen → Magnesium oxide
MgO (s) + H2O (l) → Mg(OH)2 (aq)
Magnesium oxide + Water → Magnesium hydroxide