When creating a mixture, what is the substance that is the most plentiful?

In homogeneous mixture the substance which is present in large quantity is called Solvent.

Explanation:

Mixture : It is the combination of two or more substances.The substances of the mixture can be separated by physical process.

There are two types of mixture :

1.Homogeneous Mixture : The mixture which has uniform composition throughout .E.g Salt + Water mixture , Soft drink water.

Solute : The Substance that is present in less amount in a mixture is called solute.In Salt + Water mixture, Salt is the solute.

Solvent : The substance which is present in large amount is called Solvent.In Salt + Water mixture, water is the solvent.

2.Heterogeneous Mixture:

The mixture which have non-uniform composition throughout. E.g Salt + water mixture , Chalk+ water

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