Alcl3 + na2co3 molecular, ionic, and net ionic equations

Molecular equation is nothing but the balanced chemical equation with the physical states of substances shown which we find out using the solubility rules.

Group IA salts are soluble so and NaCl are soluble in water hence (aq) is the physical state.

Chlorides are generally soluble except that of Ag, Pb amd Hg so is soluble.

Carbonates are insoluble except that of Group IA and ammonium ion  

hence is insoluble and the physical state is (s) which indicates  insoluble solid or a precipitate

Insoluble solid precipitate (s), Liquid (l) and gas (g) do not produce ions.

Salts which are soluble in water (aq) produce ions which are shown in the ionic equation  

Net ionic equation do not contain the common ions which are present  on both the sides of the ionic equation and are called as spectator ions  

Balancing is making the number of atoms of each element same on both the sides (reactant and product side).

To find the number of atoms of each element we multiply coefficient and the subscript  

For example contains  

5 ×1 = 5, Ca atoms and

5 × 2 =10, Cl atoms  

If there is a bracket in the chemical formula  

For example we multiply coefficient  × subscript × number outside the bracket to find the number of atoms  (Please note: 3 is the coefficient, and if there is no number given then 1 will be the coefficient )

So

3 × 3 = 9 , Ca atoms  

3 × 1 × 2 = 6, P atoms  

3 × 4 × 2 = 24, O atoms are present.

Molecular equation:

Ionic Equation :

Net ionic equation :

Please note: and are spectator ions

as given the equation is

2al + 6 hcl > 2 alcl3 + 3 h2(g)

as per equation two moles of aluminum reacts with six moles of hcl to give two moles of alcl3 and three moles of hydrogen gas

given: three moles of al are present and 7 moles of hcl

for three moles of aluminum nine moles of hcl will be required

however as 7 moles of hcl are present so the limiting reagent is hcl

hcl is going to decide the number of moles of product formed

when six moles of hcl are present = 3 moles of h2 are formed

when one mole of hcl is present == 3/6 mole sof h2 will be formed

when 7 moles of hcl are present = 3 x 7/ 6 moles of h2 will be formed = 3.5 moles of h2