Balance this equation
_Al +_HCI --> _H2 +_AICIz

2Al+6HCl⇒3H₂+2AlCl₃

Equalization of chemical reaction equations can be done using variables. Steps in equalizing the reaction equation:  

•1. gives a coefficient on substances involved in the equation of reaction such as a, b, or c etc.  

•2. make an equation based on the similarity of the number of atoms where the number of atoms = coefficient × index between reactant and product  

•3. Select the coefficient of the substance with the most complex chemical formula equal to 1  

Reaction

Al+HCl⇒H₂+AlCl₃

aAl+bHCl⇒cH₂+AlCl₃

Al, left=a, right=1⇒a=1

Cl, left=b, right=3⇒b=3

H, left=b, right=2c⇒b=2c⇒3=2c⇒c=3/2

the equation becomes :

Al+3HCl⇒3/2H₂+AlCl₃ x2

2Al+6HCl⇒3H₂+2AlCl₃

Explanation:

Titanium reacts slowly with oxygen at high temperatures in the presence of air to form Titanium dioxide.

The reaction is slow due to the resistance of the metal itself to corrosion which forms a layer to decrease the action of oxygen.

The balanced chemical reaction is the following: