Answer:
Al (Aluminum)
Al (OH)₃
Explanation:
Reaction Given:
AlCl₃ + NaOH -------> X (OH)₃ + NaCl
As we see at the reactants there are to compounds combining together
that is Aluminum Chloride and Sodium hydroxide.
Reaction Reactant:
AlCl₃
NaOH
This reaction is type of double displacement.
Now
if we look at the product side we again have 2 types of products
Reaction Products
1. X(OH)₃
2. NaCl
So,
Also according to law of definite composition a chemical compound have fixed ratio of component in product.
So, If we look at both the reactant and product atoms in compounds only Aluminum (Al) is missing on the product side.
Also if we look at the product i.e. X(OH)₃ means that 3 OH groups are combine with an atom that have the tendency of combining with 3 OH group and have valency of 3.
So only aluminum have the 3+ valency and can form a compound with OH have 3 at its base in unit formula.
So,
The product will be
Al (OH)₃
And the balanced chemical reaction will be
AlCl₃ + 3NaOH -------> Al(OH)₃ + 3NaCl